Animal ingredients hide in plain sight
A supplement can be 'plant-based' in its headline nutrient yet contain animal-derived components — often in the capsule or other ingredients. For vegans and vegetarians, the label needs a closer read [1].
Common animal-derived components
- Gelatin capsules and softgels — from animal collagen; vegetarian alternatives use cellulose (hypromellose) or pullulan.
- Vitamin D3 (cholecalciferol) — usually from lanolin (sheep's wool); a vegan D3 from lichen exists, as does vegan-friendly D2.
- Omega-3 — fish and krill oil are animal-derived; algae oil is the plant-based source of EPA and DHA (see [omega-3 formats](/learn/omega-3-formats-algae-guide)).
- Collagen — inherently animal-derived (bovine, marine); not vegan.
- Carmine / cochineal — a red coloring from insects.
- Glucosamine — often from shellfish (vegetarian versions exist).
- Lactose, whey, or honey/bee products — in some products.
How to read the label
- Capsule type — gelatin vs. 'vegetarian capsule'/'veg cap.'
- 'Other ingredients' — scan for gelatin, lanolin, carmine, lactose, and shellfish-derived items.
- Certification/claims — a 'vegan' or 'suitable for vegetarians' statement helps, though it isn't a single regulated standard, so the ingredient list is still worth checking.
For vegans specifically
Beyond suitability, vegans should remember that some nutrients are harder to get from plants — notably vitamin B12 — so the goal is both choosing vegan-friendly products and covering nutrients a plant-based diet may run low on (see supplements for vegans).
Practical guidance
- Check the capsule and 'other ingredients', not just the front label.
- Choose plant-based alternatives: algae omega-3, lichen D3, cellulose capsules.
- Don't assume 'natural' or 'plant-based' headlines mean the whole product is vegan — verify the components.