Sifts Microplastic Binding Supplement Review 2026: Chitosan & Microplastic Research

EMMETT, Idaho, May 21, 2026 (Newswire.com) - Disclaimers: This article is sponsored content. The following review contains affiliate links. A commission may be earned on qualifying purchases made through links in this content, at no additional cost to the reader. Affiliate relationships do not influence editorial content or the evaluation of products. Disclosure is provided in accordance with FTC 16 CFR Part 255. Individual results vary. The statements in this article have not been evaluated by the Food and Drug Administration. Products discussed are not intended to diagnose, treat, cure, or prevent any disease.

Sifts Microplastic Binding Supplement Research Update Reviews Chitosan, Gut Support Ingredients, and Safety Disclosures

TL;DR: Sifts is a daily dietary supplement formulated with chitosan and prebiotic fibers to support normal gastrointestinal elimination of ingested particles. According to ingredient-level peer-reviewed research, chitosan has been shown in both a human crossover study (PMID: 40646942) and an animal model (PMID: 40268980) to support increased fecal excretion of microplastic particles. The formula also includes apple pectin, baobab fruit extract, slippery elm, and magnesium glycinate for broader gut support. One month supply is priced at $49 on autoship. First-time orders are covered by a conditional 30-day satisfaction guarantee. Not suitable for anyone with a shellfish allergy.

If you are spending more time trying to avoid microplastics than you are making progress, the frustration is understandable. Switching water filters, buying stainless steel containers, avoiding plastic packaging - the precautions are real, but microplastic exposure through food, water, and air is documented as essentially unavoidable at background levels. Research cited in BBC Science Focus estimates that food alone accounts for 39,000 to 52,000 microplastic particles per year for the average adult - and that figure does not count inhalation or contact with plastic packaging and cookware. In April 2026, a study published in Nature Health reported that microplastics and nanoplastics were detected in nearly every human brain sample tested across 191 subjects, including healthy tissue. The question researchers are actively examining is no longer whether exposure occurs, but what the body does with the particles once they are inside - and whether dietary interventions can meaningfully support their natural passage through the digestive tract before deeper tissue accumulation occurs.

Sifts is a daily supplement designed specifically for this context. It is formulated with dietary fibers - primarily chitosan - that have been studied in peer-reviewed research for their ability to interact with microplastic particles in the gastrointestinal tract and support their excretion through normal bowel movements. The brand describes the approach as gut-focused, working locally in the digestive system rather than systemically.

This review covers the verified ingredient-level research, the exact terms of the refund policy, the allergen profile, and the compliance framing that any honest evaluation of this category requires.

View current Sifts pricing and subscription options here

Disclosure: If you buy through this link, a commission may be earned at no extra cost to you.

What Is Sifts and Who Makes It?

Sifts - sometimes searched as "Sifts supplement," "Sifts microplastic capsules," or "Gevy Labs Sifts" - is manufactured and sold by Gevy Labs LLC, a dietary supplement company whose current mailing address for returns is 2570 W Success Way, Unit 1A, Emmett, ID 83617. Customer support is available at support@sifts.co. The brand operates at sifts.co and positions Sifts as a daily wellness supplement for adults concerned about routine microplastic exposure through diet, water, and air.

The brand describes its formulation philosophy as ingredient-driven, selecting components based on peer-reviewed evidence of their physical and gut-function properties rather than relying on proprietary blends. According to the brand, each batch is third-party tested for potency, purity, heavy metals, and microbial safety. Independent verification of those test results is recommended before purchase.

The clinical advisory relationship listed on the brand's website involves Dr. Nehal Mehta, MD, FAHA, a board-certified physician with a background in NIH-funded cardiology research. Dr. Mehta is listed as Lead Clinical Advisor on the Sifts website.

The Microplastic Problem: What the Current Research Says

Microplastics are synthetic plastic particles under 5 millimeters in size. They enter the human body primarily through ingestion and inhalation - common sources include drinking water, food packaging, seafood, household dust, and processed foods. Researchers have confirmed the presence of microplastic particles in human blood, liver tissue, lung tissue, and fecal samples.

The science on long-term effects is still actively developing. What has been established is that microplastics carry surface-bound chemicals including BPA, PFAS, and other persistent compounds, and that animal models have documented associations with inflammatory markers and gastrointestinal disruption at higher exposure levels. Emerging human research is examining associations with cardiovascular and metabolic outcomes, though causation has not been established in humans at typical environmental exposure levels.

The key point for evaluating a supplement like Sifts: the gastrointestinal tract is the primary route through which ingested microplastics pass. If a dietary intervention can support faster transit and increased excretion of particles through the gut before deeper tissue interaction occurs, that represents a plausible and measurable mechanism - which is exactly what the chitosan research has begun to examine.

How Do Microplastics Leave the Body? What Current Research Shows

This is the question that makes a supplement like Sifts worth understanding - because the answer shapes exactly what a gut-focused formula can and cannot do.

Research on microplastic transit in the human body confirms that the gastrointestinal tract is the primary exit route for ingested particles. Larger microplastic fragments - generally above 150 micrometers - are considered unlikely to be absorbed through the intestinal wall and instead travel through the digestive tract alongside food waste, eventually leaving through normal bowel movements. Smaller particles and nanoplastics present a different picture: some fraction of these smaller fragments may cross the intestinal lining and enter the bloodstream, where they have been detected in blood, liver, lung, and, most recently, brain tissue.

The practical implication is that for the particles that exit through the gut, transit speed and digestive conditions matter. Material that passes more quickly and is less prone to lingering in the intestinal environment has less opportunity for wall interaction. This is exactly where dietary fiber research becomes relevant: certain fibers have been studied for their ability to increase bowel transit speed, add bulk to stool, and - in the case of chitosan specifically - physically interact with particles during digestion in a way that may support their excretion.

What fiber-based approaches cannot do - and what no currently available supplement claims to do with established clinical evidence - is extract microplastics that have already crossed into the bloodstream or accumulated in organ tissue. The gut-level approach works on what is passing through, not what has already been deposited elsewhere. That is an honest framing of both the opportunity and the limitation.

Sifts Ingredient Review: What Early Ingredient-Level Research Suggests

The Sifts formula contains five active ingredients. Below is an honest account of what ingredient-level research supports for each.

Chitosan - The cornerstone of the Sifts formula. Chitosan is a shellfish-derived dietary fiber produced by deacetylating chitin from crab and shrimp shells. It carries a positive surface charge at digestive pH levels, which allows it to interact electrostatically with negatively charged particles, including many types of microplastic polymers.

Two peer-reviewed studies speak directly to this question:

In a human crossover study published in Foods (PMID: 40646942), ten healthy volunteers consumed 0.8 grams of chitosan derived from Procambarus clarkii alongside a standardized meal. Measured microplastic particle counts in stool were 356 in the standardized meal alone, 656 ± 110 particles in Phase 1 feces, and 965 ± 165 particles in Phase 2 feces - representing a measurable increase in fecal microplastic excretion following chitosan intake. This was a small preliminary study of ten participants; the findings are early-stage and require replication in larger trials before definitive conclusions can be drawn.

In an animal model study published in Scientific Reports (PMID: 40268980), researchers at Tokai University fed rats diets containing polyethylene microplastics alongside chitosan or other dietary fibers. The chitosan group showed a fecal microplastic excretion rate of 115.6% ± 4.5% over 144 hours, compared to 83.7% ± 3.8% in the control group. The chitosan group also showed significantly lower intestinal retention of microplastics and increased fecal weight. Animal model data does not translate directly to human outcomes, and these findings should be interpreted accordingly.

• Apple Pectin (Malus domestica, pomace), standardized to 55% fiber - A soluble fiber from apple fruit, standardized to a verified fiber content of 55%. Apple pectin forms a gel matrix in the gut that supports normal bowel transit and increases intestinal viscosity. Research on high-degree-esterification pectin has examined its gel-forming and water-binding properties in the intestinal environment. Pectin is also fermented by the gut microbiota in ways that may support beneficial bacterial populations. The 55% fiber standardization is a meaningful quality spec - it confirms the extract is concentrated rather than simply dried apple pomace. At the ingredient level, the brand's rationale for including apple pectin alongside chitosan - as a supportive matrix fiber - is consistent with published gut-function research.

• Baobab Fruit Extract (Adansonia digitata L.), standardized to 10% Polyphenols - A polyphenol-rich botanical standardized to a verified 10% polyphenol content, confirmed on the Supplement Facts label. Baobab is studied for its prebiotic fiber content and antioxidant properties, with research examining its effects on gut microbiome diversity and digestive resilience. It is included in Sifts as part of the 180mg Gut-Health Blend, primarily for microbiome and gut-environment support rather than as a primary microplastic-binding agent.

• Slippery Elm Extract (Ulmus rubra, bark), standardized to 20% mucilage - A natural source of mucilage standardized to 20% mucilage content, confirmed on the verified label. Mucilage is the gel-forming compound that gives slippery elm its traditional reputation for coating and soothing the mucous membranes of the digestive tract. It is included in Sifts as part of the Gut-Health Blend to support the digestive lining during sustained daily fiber intake. The 20% mucilage standardization confirms this is an active extract rather than raw bark powder.

• Magnesium Glycinate - Included at 12mg per serving (3% of the Daily Value for magnesium), confirmed on the verified Supplement Facts label. The brand states this form is included as a source of glycine to support gut comfort and barrier integrity. Magnesium glycinate is a well-tolerated form of magnesium frequently used in gut-support formulations. At 12mg per serving, this is a low supplemental dose of magnesium - well below therapeutic ranges - consistent with its inclusion as a gut-support cofactor rather than a primary magnesium supplement.

What honest evaluation of the formula requires acknowledging: The clinical evidence base for microplastic binding by dietary supplementation is at an early stage. The human study directly relevant to Sifts (PMID: 40646942) involved ten participants and is explicitly described by its authors as preliminary. The animal study (PMID: 40268980) used a rat model with polyethylene microplastics at controlled concentrations - conditions that may not precisely replicate the heterogeneous exposures encountered in daily life. The mechanism of electrostatic interaction between chitosan and negatively charged microplastic particles is biologically plausible, but the full scope of in-vivo efficacy across different microplastic polymer types has not been established in humans.

For buyers in this category: the research is real, it is peer-reviewed, and it is among the more relevant ingredient-level studies currently cited within the emerging dietary fiber and microplastic-support category. It is also early. Sifts appears to be one of the first supplement brands to build a formula around this specific research direction.

Does Chitosan Actually Work for Microplastics? Breaking Down the Mechanism

This is the core question for anyone evaluating Sifts, and it deserves a direct answer rather than marketing language.

Chitosan is a shellfish-derived dietary fiber produced by processing chitin - the structural material in crab and shrimp shells - through a chemical process called deacetylation. The result is a fiber that carries a positive electrical charge when dissolved in stomach acid at digestive pH levels. Most microplastic polymers - including common household plastics such as polyethylene and polypropylene - carry a negative surface charge. Oppositely charged materials attract each other. This electrostatic interaction is proposed as the mechanism underlying chitosan's microplastic-binding effect.

That mechanism has now been tested in peer-reviewed research at two levels:

• In animals (PMID: 40268980, Scientific Reports, April 2025): Researchers at Tokai University fed rats a diet containing polyethylene microplastics alongside one of four indigestible dietary fibers - indigestible dextrin, lactosucrose, chitosan, or eggshell membrane proteins. Only the chitosan group showed significant changes: higher fecal excretion rates of microplastics (115.6% ± 4.5% over 144 hours vs. 83.7% ± 3.8% in controls) and lower intestinal retention (6.1% vs. 12.1% in controls). The lead researcher, Prof. Muneshige Shimizu, confirmed: "We confirmed that chitosan binds to microplastics." This was an animal model using controlled polyethylene particles - findings do not directly translate to every real-world human exposure scenario.

• In humans (PMID: 40646942, Foods, June 2025): A preliminary crossover study of ten healthy volunteers found that consuming 0.8 grams of chitosan alongside a standardized meal measurably increased microplastic particle counts in fecal output compared to the meal alone. This is the first peer-reviewed human data linking chitosan intake to microplastic excretion. It is a small, preliminary study - the authors describe it that way themselves - and it should be read as early directional evidence rather than established clinical proof.

So: does chitosan work for microplastics? The honest answer is that the early evidence - both animal and preliminary human - points in the same direction. The mechanism is biologically plausible and is now supported by published data at both levels. What does not yet exist is a large-scale, long-duration randomized controlled trial in humans that confirms efficacy across populations and microplastic types. That is a meaningful gap, and any supplement brand that tells you otherwise is overstating the evidence.

Sifts uses medium-molecular-weight, shellfish-derived chitosan with a degree of deacetylation of at least 85%, which the brand states is optimized for binding capacity and digestive tolerability. That specification matters because chitosan's binding properties are influenced by its molecular weight and deacetylation level - a point the published research accounts for.

Sifts Supplement Facts and Dosage

The following reflects the verified Supplement Facts label for Sifts. The label is the authoritative source for ingredient data; all figures below are taken directly from it.

Serving Size: 2 capsules
Servings Per Container: 30 (60 capsules per bottle)
Suggested Use: Take 2 capsules daily. Individuals new to fiber-rich supplements may wish to start with 1 capsule daily for the first few days before moving to the full serving.

Active Ingredients Per Serving (per verified label):

• Magnesium (as Magnesium Glycinate) - 12mg | 3% Daily Value

• Sifts Binder Blend - 950mg (Daily Value not established)

  • Chitosan (shellfish-derived)

  • Apple Pectin (Malus domestica) (pomace), standardized to 55% fiber

• Sifts Gut-Health Blend - 180mg (Daily Value not established)

  • Baobab Fruit Extract (Adansonia digitata L.), standardized to 10% Polyphenols

  • Slippery Elm Extract (Ulmus rubra) (bark), standardized to 20% mucilage

The two named blends account for a combined 1,130mg of active fiber, botanical, and gut-support material per serving. The Sifts Binder Blend at 950mg is the primary delivery vehicle for chitosan and apple pectin - the two ingredients most directly studied for their interaction with ingested particles in the gut. The Gut-Health Blend at 180mg provides baobab polyphenols and slippery elm mucilage for microbiome and gut-lining support.

One point worth flagging for research-minded buyers: both blends are proprietary, meaning individual ingredient weights within each blend are not broken out on the label. The total blend weights are verified (950mg and 180mg), but the per-ingredient split between chitosan and apple pectin - or between baobab and slippery elm - is not disclosed. This is standard industry practice for proprietary blends and does not indicate a compliance issue. It means the exact dose of chitosan per serving cannot be confirmed from the label alone. For reference, the human crossover study supporting chitosan used a dose of 0.8g (800mg); the Binder Blend total across both chitosan and apple pectin is 950mg.

Other Ingredients (brand-stated): Hypromellose (vegan capsule shell), microcrystalline cellulose, leucine, silicon dioxide. The brand states the formula is free from dairy, gluten, soy, tree nuts, artificial flavors, artificial colors, artificial sweeteners, and synthetic preservatives.

Allergen - label confirmed: The Supplement Facts label carries an explicit allergen note: Contains Shellfish (Crab, Shrimp). This is printed on the label itself. Individuals with a shellfish allergy or seafood sensitivity must not use this product under any circumstances. This is an absolute disqualifier - not a caution to weigh against benefits.

The brand also advises against use by anyone who is pregnant, breastfeeding, or under 18. As with many fiber-containing supplements, individuals taking prescription medications may wish to separate dosing times and consult a healthcare professional or pharmacist regarding potential absorption interactions before beginning use.

Sifts Pricing: What the Official Website Shows

The following pricing reflects what was published on the official Sifts product page (sifts.co/products/sifts-microplastic-support) when this article was written. Pricing, subscription terms, and availability should be verified directly on the official website before purchase, as offers are subject to change:

• 1-Month Supply (Autoship): $49 per month, billed every 4 weeks. This works out to approximately $1.63 per day. The autoship plan includes fast and free shipping on the first order, a free eco-friendly refillable glass jar, and a Plastic-Lite Guide. Autoship subscriptions can be paused or canceled at any time.

• 3-Month Supply (Autoship): $42 per month, billed as $126 every 12 weeks. The brand lists this as a 35% savings versus the listed retail comparison.

Pricing is subject to change. The official website should be consulted for current offers. One-time purchase pricing was not separately broken out on the product page at the time of this review; the brand references a one-time purchase option during checkout.

The subscription model also includes a free refillable glass jar - a detail worth noting given that the brand's refund policy (detailed below) requires return of the glass jar for guarantee claims.

Learn more about Sifts and check current availability here

Sifts Refund Policy: The Exact Terms

Sifts offers a 30-day satisfaction guarantee on qualifying first-time orders - one use per customer. Before committing to a subscription, it is worth understanding exactly how this works:

• To initiate a refund, the buyer must email support@sifts.co stating dissatisfaction and intent to exercise the guarantee.

• The original glass jar from the order must be physically returned to Gevy Labs LLC Returns, 2570 W Success Way, Unit 1A, Emmett, ID 83617. Return shipping costs are the customer's responsibility.

• Both the refund request email and the return shipment must be initiated within 60 days of the original delivery date.

• Approved refunds are limited to the purchase price of one order, less a $5.00 restocking fee. Shipping charges, duties, and taxes are not refundable.

• Refunds are issued only after the returned glass jar is received and inspected.

• The guarantee applies only to the first qualifying order. Subscription renewals, reactivated subscriptions, and additional orders are not eligible.

In plain terms, this is a real guarantee, but it is not a no-questions-asked window. Getting a refund requires mailing the glass jar back at your own expense - a step most buyers do not anticipate.

How Does Sifts Compare to Activated Charcoal and Diet-Only Approaches?

The brand's website includes a comparison across three approaches to microplastic exposure: Sifts, activated charcoal, and food-swap-only strategies. The key distinctions the brand draws, based on published materials:

• Sifts vs. Activated Charcoal: Activated charcoal is a broad-spectrum adsorbent that is generally not recommended for daily use because it binds non-selectively - including nutrients and medications alongside the particles it is intended to capture. Chitosan's electrostatic mechanism is more specific to charged particles at gut pH, and the formula is described by the brand as designed for daily use. As with many fiber-containing supplements, individuals taking prescription medications may wish to separate Sifts dosing from medication dosing times and consult a healthcare professional regarding potential absorption interactions.

• Sifts vs. Food Swaps Alone: Dietary modifications - reducing plastic-packaged foods, filtering tap water, avoiding canned goods - can lower microplastic intake at the source. They do not provide a binding or excretion mechanism for particles that enter through unavoidable routes (air, drinking water, produce contact). Sifts operates on the elimination side of the equation rather than the avoidance side, making the two approaches complementary rather than competing.

Neither comparison constitutes an absolute efficacy claim. The brand's published comparisons are accurate representations of the mechanistic differences.

Who Should Consider Sifts - and Who Should Not

Sifts is most relevant for adults who:

• Have no shellfish allergy (this is a hard requirement - chitosan is shellfish-derived)

• Are already taking steps to reduce microplastic exposure through diet or environment and want to add an elimination-side approach

• Are comfortable with the early-stage nature of the human research and are purchasing based on plausible mechanism and ingredient-level data rather than proven efficacy at scale

• Prefer a formula that is free from dairy, gluten, soy, artificial additives, and unnecessary fillers

• Are looking for a daily supplement with a transparent ingredient panel and third-party testing

Sifts is not appropriate for:

• Anyone with a shellfish or seafood allergy - this is absolute

• Pregnant or breastfeeding individuals

• Anyone under 18

• Individuals taking prescription medications that have absorption timing sensitivity - as with many fiber-containing supplements, users taking prescription medications may wish to separate dosing times by at least two hours and consult a healthcare professional or pharmacist regarding potential absorption interactions before beginning use

Is Sifts Legitimate? What an Honest Assessment Shows

Sifts is a real product from a real company. Gevy Labs LLC has a published mailing address, working customer support, and peer-reviewed ingredient-level research backing its primary active compound. The two citations the brand references on its science page - PMID: 40646942 and PMID: 40268980 - are verifiable, peer-reviewed, and accurately characterized in the brand's materials.

The category itself is new. "Microplastic support supplements" did not exist as a product category in any meaningful way until the underlying chitosan-microplastic research began publishing in 2024 and 2025. Sifts appears to be among the first brands to build a consumer supplement around this specific research direction, which means the buyer is making a decision based on emerging science, not decades of clinical validation.

That distinction matters. The proposed electrostatic interaction mechanism has been described in published research and remains an active area of investigation - and the early peer-reviewed findings are among the more relevant ingredient-level studies currently cited in this emerging category. The human trial data is preliminary and small. The brand accurately represents both of these realities on its science page rather than overclaiming.

For buyers who are comfortable making a decision based on plausible mechanisms and early-stage peer-reviewed data, Sifts is a legitimately formulated option. For buyers who require Phase 3 clinical trial data before purchasing a supplement, this category isn't there yet - and Sifts is honest about that.

Sifts FAQ

Note: Customer experiences reflected in brand materials are individual. Results vary and may not reflect what a typical user will experience. The questions below focus on ingredient-level evidence and product terms rather than brand-reported customer experiences.

What exactly does Sifts do in the digestive tract?

According to the brand and the ingredient-level research it cites, Sifts works locally in the gastrointestinal system rather than systemically. Chitosan, the primary active ingredient, carries a positive surface charge at digestive pH. Many microplastic polymer types carry a negative surface charge, allowing for electrostatic interaction between the chitosan fiber matrix and plastic particles in the gut. The brand's formulation also includes apple pectin, baobab fruit extract, and slippery elm as secondary fibers that support a healthy gut environment and normal motility during daily use. The goal of the formula, as described by the company, is to support the natural passage of microplastic particles through the digestive tract and out of the body through normal elimination rather than allowing them to remain in the gut for extended periods. These statements have not been evaluated by the FDA, and the product is not intended to diagnose, treat, cure, or prevent any disease.

What research backs the chitosan in Sifts?

Two published peer-reviewed studies are relevant. The first (PMID: 40268980) is an animal model study published in Scientific Reports in April 2025 by researchers at Tokai University. Rats fed dietary chitosan alongside polyethylene microplastics showed significantly higher fecal excretion rates and lower intestinal retention compared to control groups. The second (PMID: 40646942) is a preliminary human crossover study published in the journal Foods in June 2025. Ten healthy volunteers consumed chitosan alongside a standardized meal. Measured microplastic particle counts in feces increased following chitosan consumption compared to the standardized meal alone. Both studies are early-stage. The human study involved ten participants and is explicitly described as preliminary by its authors. Larger, longer-duration human trials are needed to establish efficacy across populations and microplastic types.

Does Sifts work for all types of microplastics?

The published research on chitosan's interaction with microplastic particles has focused primarily on polyethylene microplastics in the animal study and on a range of mixed microplastic particles (20-500 µm size) in the human study. Whether chitosan's electrostatic binding mechanism operates equivalently across all microplastic polymer types, sizes, and surface chemistries remains unclear. The brand's position is that the mechanism - positive-charge fiber interacting with negatively charged particles during digestion - is broad in principle, but the research base does not yet fully characterize the breadth of that interaction across all real-world exposure conditions.

Is there anyone who should not take Sifts?

Absolutely - and this is non-negotiable. Sifts contains shellfish (crab and shrimp) as the source of its chitosan. Anyone with a shellfish allergy or seafood sensitivity must not use this product. This is explicitly stated on the product label and in the brand's FAQ. Additionally, the brand states that Sifts is not recommended for individuals who are pregnant, breastfeeding, or under 18 years of age. As with many fiber-containing supplements, individuals taking prescription medications may wish to separate dosing times and consult a healthcare professional or pharmacist regarding potential absorption interactions before beginning use.

How does Sifts' refund policy work?

Sifts offers a 30-day satisfaction guarantee for first-time orders only, limited to one use per customer. To exercise the guarantee, buyers must email support@sifts.co to notify the company and must physically return the glass jar from the order to 2570 W Success Way, Unit 1A, Emmett, ID 83617. Customers pay return shipping. Both the notification email and the return shipment must be initiated within 60 days of the original delivery date. Approved refunds are for the purchase price of the product minus a $5.00 restocking fee. Original shipping charges are not refunded. Refunds are processed after the glass jar is received and inspected. Subscription renewals and additional orders beyond the first are not covered by the guarantee.

How do I take Sifts?

The recommended serving is 2 capsules per day. Each bottle contains 60 capsules, which represents a 30-day supply at the full serving. The brand recommends that individuals new to fiber-rich supplements start with 1 capsule daily for the first few days to allow for digestive adjustment before moving to the full 2-capsule serving. The company states that exceeding the labeled serving does not improve effectiveness and may increase the likelihood of digestive discomfort.

Does Sifts contain plastic?

According to the brand, Sifts does not contain plastic or microplastics. The capsule shell is vegan (hypromellose). Packaging is described as plastic-free amber glass. The brand states that ingredients are selected specifically to avoid plastic content and that every batch is tested for this.

What is Gevy Labs LLC?

Gevy Labs LLC is the company behind Sifts. Its public-facing contact for returns is 2570 W Success Way, Unit 1A, Emmett, ID 83617. Customer support is available at support@sifts.co. The brand operates its consumer website at sifts.co. Per the site terms, Gevy Labs LLC is incorporated under the laws of the State of New York.

Is this category of supplement new?

Yes. The scientific research on dietary interventions for microplastic excretion - particularly using chitosan - only began publishing in accessible peer-reviewed journals in 2024 and 2025. Consumer supplements targeting this mechanism are at the very early stage of the category lifecycle. Buyers should approach this as an emerging category decision based on plausible early-stage science, not an established wellness category with decades of clinical trials behind it.

What is the difference between Sifts and a standard fiber supplement?

Standard fiber supplements are formulated primarily to support regularity, digestive transit, blood sugar management, or cholesterol levels. Sifts is specifically formulated around chitosan's electrostatic interaction with charged particles in the gut - a mechanism not shared by most common fiber sources such as psyllium husk or inulin. The brand also includes prebiotic fibers (apple pectin and baobab) and a mucilaginous fiber (slippery elm) to create a supportive gut environment alongside the primary binding ingredient. The differentiation lies in the specific mechanism and the rationale for ingredient selection, not simply in the presence of fiber per se.

How quickly does Sifts work?

The human study referenced in the Sifts formula (PMID: 40646942) measured increased microplastic excretion within 12 hours of a single chitosan dose. However, the brand emphasizes that consistent daily use over time - rather than any single dose - is how the product is intended to be used and evaluated. The brand states that consistency matters more than any individual dose.

Can fiber supplements help with microplastics generally, or is chitosan specifically required?

The published animal study tested four indigestible dietary fibers - indigestible dextrin, lactosucrose, chitosan, and eggshell membrane proteins - and found that only the chitosan group showed a statistically significant increase in fecal excretion of microplastics. The other fibers tested, including indigestible dextrin, did not produce the same effect. This specificity is important: not all fiber supplements interact with microplastics in the same way, and the research does not support a general claim that any fiber will do the trick. Chitosan's positive charge at digestive pH appears to be the differentiating factor. Sifts also includes apple pectin and baobab fruit extract as secondary fibers, which the brand includes for gut motility and microbiome support rather than as primary microplastic-binding agents.

What does the 2026 brain microplastic research mean for daily supplement users?

A study published in Nature Health in April 2026 detected microplastics and nanoplastics in nearly all 191 human brain samples tested, including healthy tissue. A separate study published in Nature Medicine in 2025 by University of New Mexico researchers found that microplastic concentrations in brain tissue were higher than in liver or kidney tissue, and appeared to have increased by approximately 50% between 2016 and 2024 samples. These findings reflect tissue accumulation - particles that have already crossed from the gut into circulation and reached the brain. A gut-level supplement like Sifts works on particles during their transit through the digestive tract, which is the primary route of exit for ingested microplastics. The two findings are related but distinct: Sifts addresses the digestive transit phase; the brain accumulation research documents what happens to particles that move beyond the gut. No supplement currently available with established clinical evidence addresses microplastics that have already accumulated in organ tissue. These statements have not been evaluated by the FDA. Products discussed are not intended to diagnose, treat, cure, or prevent any disease.

What is the difference between microplastics and nanoplastics, and does it matter for supplement use?

Microplastics are plastic particles between 1 micrometer and 5 millimeters in size. Nanoplastics are smaller - under 1 micrometer - and are considered more concerning by some researchers because their smaller size may allow them to cross biological barriers, including the intestinal lining and potentially the blood-brain barrier. The published chitosan research (PMID: 40646942 and PMID: 40268980) studied microplastics in the 20-500 micrometer range and polyethylene particles averaging 200 micrometers, respectively. The interaction of chitosan with nanoplastics - much smaller particles - has not been separately characterized in the same way in published research. This is a meaningful limitation that an honest evaluation of Sifts, or any similar product, must acknowledge. The brand focuses its claims on microplastic-range particles, which is consistent with the available research.

Is Sifts made in a GMP-certified facility?

The brand states that Sifts is manufactured in a cGMP-certified, FDA-inspected facility. Each batch undergoes third-party testing for purity, potency, heavy metals, and microbial safety, according to the company. The brand has not published specific third-party test certificates in publicly accessible materials at the time of this review. Buyers who want to verify current testing documentation are encouraged to contact Gevy Labs LLC directly at support@sifts.co or check the official product page at sifts.co/products/sifts-microplastic-support, where the brand may make current certificates available on request.

How does Sifts compare to other microplastic supplements on the market?

The microplastic supplement category is genuinely new - barely a year old as of 2026, and very few products have been specifically formulated around peer-reviewed microplastic-binding research. Most products in adjacent categories - activated charcoal supplements, general fiber blends marketed for cleansing, broad-spectrum adsorbents - were not designed with the chitosan-microplastic mechanism in mind and have not been tested in the microplastic-specific research that Sifts cites. Activated charcoal, by contrast, is a broad-spectrum non-selective adsorbent that is generally not recommended for daily use because it can bind medications and nutrients alongside target substances. Chitosan's mechanism is more specific to charged particles at digestive pH. It is not a fair comparison - only chitosan has been directly studied for microplastic excretion in peer-reviewed human and animal research. General fiber supplements and activated charcoal products have not been tested in these specific conditions. Individual results vary. These statements have not been evaluated by the FDA.

Final Verdict: Is Sifts Worth Trying?

Based on a review of publicly available brand materials, Sifts uses more measured language than many emerging-category supplement brands - but buyers should understand that the evidence remains early-stage. The brand does not overclaim. Its science page accurately represents the preliminary nature of the human trial data. Its FAQ acknowledges uncertainty where uncertainty exists. Its ingredient panel is short, functional, and traceable to published research. The allergen disclosure is prominent and unambiguous.

Microplastic exposure is increasingly studied in environmental and human health research, and the question of accumulation in human tissue is an active area of scientific inquiry. The question of whether a dietary supplement can meaningfully support the body's elimination of ingested particles is a legitimate one that peer-reviewed research is beginning to answer - and the early answers, particularly around chitosan, are promising enough to warrant serious attention.

For buyers who are not allergic to shellfish, want a daily gut-support approach specifically designed for the modern microplastic exposure environment, and are comfortable making an informed purchase based on early-stage but credible ingredient research, Sifts is a well-constructed entry point into this category.

The refund guarantee is conditional - buyers should understand the return process before committing - but it exists and is clearly disclosed. The autoship pricing is competitive for a specialized formula of this type. The brand states that each batch is third-party tested, though buyers should confirm current test documentation directly on the official website.

The honest summary of where this category sits today: promising early-stage ingredient research, not yet established clinical efficacy. Sifts appears to understand that gap clearly and communicates it rather than papering over it. That is the right posture for a brand operating in an emerging science space.

See current Sifts pricing, subscription details, and shipping information here

Contact Information

• Company: Sifts

• Email: support@sifts.co

• Return Address: Gevy Labs LLC Returns, 2570 W Success Way Unit 1A, Emmett, ID 83617 USA

Disclaimers

• FDA / DSHEA Disclosure: The statements in this article have not been evaluated by the Food and Drug Administration. Products discussed are not intended to diagnose, treat, cure, or prevent any disease. Dietary supplements are regulated under the Dietary Supplement Health and Education Act of 1994 (DSHEA). Information provided is for general informational purposes and does not constitute medical advice. Readers experiencing symptoms or considering changes to health regimens should consult a licensed healthcare professional. Individual results vary.

• FTC Affiliate and Endorsement Disclosure: This article contains affiliate links. A commission may be earned on qualifying purchases made through links in this content, at no additional cost to the reader. Affiliate relationships do not influence editorial content or the evaluation of products. Disclosure is provided in accordance with FTC 16 CFR Part 255 (Guides Concerning the Use of Endorsements and Testimonials in Advertising) and the FTC Health Products Compliance Guidance. Health benefit claims in this article are limited to ingredient-level structure/function language supported by peer-reviewed research, consistent with FTC substantiation standards requiring competent and reliable scientific evidence.

• Results Disclaimer: Individual results vary. The ingredient-level research cited in this article does not guarantee identical outcomes for all users. Factors including individual physiology, diet, existing gut health, and consistency of use may affect results.

• Medical Advice Disclaimer: Nothing in this article constitutes medical advice, a diagnosis, or a recommendation to use any specific supplement or treatment. Readers should consult a licensed healthcare professional before starting any new supplement, particularly if pregnant, nursing, under 18, taking prescription medications, or managing a health condition.

• Pricing Disclaimer: Pricing information reflects publicly available data from the brand's official website at the time of review. Prices are subject to change. Current pricing should be confirmed on the official product website before purchase.

• Publisher Independence and Advertorial Standards Disclaimer: This article is sponsored/advertorial content and has been clearly labeled as such. It reflects an analysis of publicly available brand materials and peer-reviewed research. It does not represent independent news reporting, editorial coverage, or a formal recommendation from any wire distribution platform, news outlet, or healthcare organization. This content complies with wire platform advertorial distribution standards requiring clear sponsored-content labeling. The analysis is not an endorsement from any retailer, marketplace, or distribution platform.

• Allergen Disclaimer: Sifts contains shellfish (crab and shrimp). Individuals with a shellfish allergy or seafood sensitivity must not use this product. This information is disclosed on the official product label. Readers should review the full allergen panel on the product label and official website before purchasing.

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SOURCE: Sifts

Source: Sifts