Chitosan

Chitosan reference formula with 1,000 mg per serving, developed as a capsule or a powder.

Chitosan is a reference formula for brands building a single-ingredient chitosan fiber product, with the polysaccharide declared by weight. The default serving carries 1,000 mg of chitosan, and the brand sets the final amount, the chitosan source and grade, and the format for its market.

A capsule is the format with the most reference labels, with powders close behind, and the default amount comes from a powder label. The development work centers on the source and the degree of deacetylation of the chitosan, its allergen status, and the bulk and flow of a light fiber powder.

Ingredient Composition

IngredientPer ServingRaw Material FormAlternative Form (same amount of active)
Chitosan1000 mg (default amount)Chitosan powder from crustacean shell or from fungal sources; specification 1,000 mg per serving, with degree of deacetylation, viscosity or molecular weight, and ash set with the supplierA different chitosan grade at an adjusted weight

The amount is the weight of chitosan as declared on the label, so the degree of deacetylation and the viscosity grade are part of the specification and are not inferred from the weight. The label names the ingredient as chitosan; the source is set in the specification and decides the allergen labeling.

Intended Benefits & Formula Rationale

This formula is designed for products positioned around weight management nutrition and dietary fiber intake. Chitosan is included as the single active so that the source, the grade and the format can be set around one ingredient.

Intended Benefit DirectionKey IngredientsFormulation Rationale
Dietary fiber ingredientChitosanIncluded as a polysaccharide fiber from shell or fungal sources, in a single-ingredient format. Evidence: Product positioning
Body weight and body fatChitosanA meta-analysis of 19 randomized trials found that chitosan reduced body weight by 0.79 kg (95% CI -1.30 to -0.29) and body-fat percentage by 0.41%, with no significant effect on body mass index or waist circumference; the authors call for larger, better designed studies [1]. Evidence: Mixed

The default amount is a starting point, and the brand sets the final amount and the format for its market.

Available Formats

The reference formula is built for a capsule version and a powder version; counts per serving are design choices that the brand can adjust.

FormatUnitPer ServingPack SizeOther Ingredients (typical)Suitability
Capsule3 capsules1000 mg chitosan90 or 180 capsulesCapsule shell, flow agentLead format; about 333 mg per capsule
Powder1 stick pack1000 mg chitosan30 stick packsCarrier, natural flavorPowder to mix with water; carries the default amount

Raw Material Input & Fill (Design Estimate)

Design estimates. Chitosan is assumed at 100% of the declared weight and a bulk density of 0.4 g/mL, so a size 00 capsule holds about 400 mg and a 1,000 mg serving needs three capsules or a size 000 capsule.

FormatRaw Material Input per UnitDesign FillBalance for ExcipientsVerification Before Scale-Up
CapsuleAbout 333 mg chitosan per capsule (three capsules per serving)About 340 mg in a size 00 capsuleAbout 7 mg flow agentBulk density and flow, fill weight variation, moisture, disintegration
Powder1000 mg chitosan per stick3 g stick packAbout 2 g carrier and flavorBlend uniformity, dispersion in water, taste, moisture

Tablet and gummy versions are separate projects, because a gram-level fiber dose needs its own compression or gummy base study.

Formulation Considerations

Source and allergen labeling. Chitosan is made from crustacean shells or from fungi. A crustacean source brings allergen labeling, so the source is chosen first and written into the specification and the label.
Grade. The degree of deacetylation and the viscosity grade change the behavior of the powder in water and in the capsule. The specification names both and the test method.
Bulk and dispersion. Chitosan is a light powder that swells in water. Flow, capsule count, dispersion and the bulk of the powder in a drink are tested in the pilot run.
Evidence and claims. The cited weight results were small on average, with several outcomes not significant [1], so claims on a finished product are reviewed for each sales market before a product is developed.

Customization Options

Brands adjust the chitosan amount, the source and grade, and the format.

ParameterRangeNote
Chitosan per serving450 to 1200 mg across the reference labelsThe grade and the capsule count decide the amount
SourceCrustacean shell or fungalSets the allergen labeling and the positioning
FormatCapsule or powderTablet and gummy are separate projects
Flavor systemUnflavored, citrusUsed in the powder
Add-onsVitamin C, green tea extractEach add-on changes the fill weight and the label

The pilot run confirms the capsule fill weight and flow, the powder dispersion and the moisture of the first fills.

Flavor Options

FormatSuggested FlavorsWhy
PowderUnflavored, citrusCitrus notes suit a drink

Technical Status & Data Sources

ItemStatusDetails
Reference formulaNIH DSLDThe ingredient and amount come from a labeled product in the NIH DSLD (1000 mg on the label of CF024641; example DSLD labels 252518, 253476, 253478). The label names the ingredient as chitosan; the source is set in the specification.
SpecificationSet in formulationChitosan, 1,000 mg per serving; source, degree of deacetylation, viscosity, ash, loss on drying, heavy metal and microbial limits and methods are fixed with the supplier. Unit size, fill weight and stability are set in formulation.
Data sourceNIH DSLDDSLD v9.4.0, downloaded 2026-01-10: 50,824 reference formulas merged from on-market labels with complete ingredient amounts. Counts show how labels are distributed.
Market reviewPer marketDose limits, labeling and claims are reviewed for each sales market before a finished product is developed.
ReferencesSources[1] Kholdebarin M, Pahlavani N, Nikbaf-Shandiz M, et al. A Systematic Review and Meta-Analysis to Evaluate the Effects of Chitosan on Obesity Indicators. Food Sci Nutr. 2024;12(12):10030-10048. DOI · PubMed

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