Not All Supplements Are Vegan: What to Check Before You Buy

A supplement brand can be largely or primarily focused on vegan products while still selling individual products that are not suitable for vegans. This catches buyers out more often than it should. The most common example is collagen, but it is not the only one. Here is what to check before assuming a product fits your diet.

Why Collagen Is Not Vegan

Collagen is a structural protein found in animal connective tissue. Marine collagen, the most bioavailable form, is derived from fish skin and scales. Bovine collagen is derived from cow hide. There is no such thing as a vegan collagen supplement in the conventional sense. The protein structure of collagen is specific to animals. Plant-based supplements marketed as supporting collagen production typically contain ingredients like Vitamin C, which supports the body's own collagen synthesis, rather than actual collagen.

If a brand sells both a comprehensive daily gummy that is vegan and a separate collagen gummy, these are different products with different ingredient profiles. The vegan status of one does not transfer to the other. Check each product individually.

Other Common Non-Vegan Supplement Ingredients

Gelatine capsules and gummy bases are the most frequent source of hidden animal ingredients. Lanolin-derived Vitamin D3 is another. Omega-3 from fish oil is obviously not vegan, though algae-based omega-3 provides the same DHA and EPA without fish. Some probiotic products use dairy-derived fermentation media. Certain supplement fillers and coatings can use shellac, derived from lac insects, or carmine, derived from cochineal beetles.

How to Check Properly

Look for explicit vegan certification on each product, not just on the brand's homepage. Read the full ingredient list including the excipients, the inactive ingredients, not just the active nutrients. If a D3 supplement does not specify the source, contact the brand. If a gummy's base ingredient is not listed, that is a transparency problem regardless of whether it turns out to be vegan.

Why We're Transparent About Our One Non-Vegan Product

Related Reading

Vegan Vitamin D UK: Why Most Adults Are Deficient and What Plant-Based Supplement Buyers Need to Know · Vegan Omega-3 UK: Why Algae Is the Smarter Source (And How to Supplement It) · Vitamin D Gummies UK: Why the NHS Says Every Adult Should Supplement · See our full ingredient list · Are GUUDIES vegan, gluten-free and halal? · What are GUUDIES? · Our Story

Our Marine Collagen gummy contains fish-derived hydrolysed marine collagen. It is not vegan. We say this clearly on every product page, in every ingredient list, and in this blog post. Every other product in the Guudies range is fully vegan pectin base, lichen D3, no gelatine anywhere.

The most trustworthy brands are transparent about exactly which products are vegan and which aren't. If a brand is evasive about this, that tells you something about how they approach everything else too. Try Guudies today.