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Gelatin – Animal protein used for capsules, gummies, and joint support

Gelatin is an animal-derived protein obtained by the partial breakdown (hydrolysis) of collagen from tissues such as skin, bones, and connective tissue. In dietary supplements, it is used both as an active ingredient to support joints and tissues, and as a highly common structural material for manufacturing capsules, softgels, and gummies.

Characteristics, Origin, and Composition

Gelatin is rich in specific amino acids, including glycine, proline, and hydroxyproline, which are the primary building blocks of human collagen. It is typically sourced from bovine (cow) or porcine (pig) tissues, though marine (fish) gelatin is also available. A defining characteristic of gelatin is its ability to dissolve in warm water and form a firm, flexible gel upon cooling, making it exceptionally well-suited for producing pliable capsule shells and chewable supplements.

Use in Dietary Supplements

Gelatin is commonly used:

As the primary structural material (shell) for hard capsules and softgels, helping to protect active ingredients, reduce oxidation, and make the supplement easier to swallow.
As a binding and gelling agent in the production of vitamin gummies.
As an active ingredient (sometimes further broken down into hydrolyzed collagen peptides) in joint, bone, skin, hair, and nail formulas, to support tissue structure.

The amount used varies widely; as a capsule material, it serves simply as a functional excipient, whereas as an active protein supplement, it is often taken in doses of several grams per serving.

Everyday Use and Well-Being

When used in appropriate amounts, gelatin is a versatile protein that facilitates the delivery of many supplements and can provide additional amino acids. Dietary supplements do not replace proper nutrition or medical treatment. Because gelatin is an animal product, it is not suitable for vegetarians and vegans. Individuals with specific dietary requirements (such as halal, kosher, or plant-based preferences) should check the label for the source of the gelatin or seek out plant-based alternatives.