Question
Are supplement capsules vegetarian?
The two kinds look identical and the label always distinguishes them. You just have to know which list to read.
Part of Animal ingredients · Halal and kosher
A capsule gives nothing away from the outside. Two products on the same shelf, identical in appearance, and one is made from an animal.
The good news is that this is one of the few questions on this site with a clean answer available on the packet.
The two shells
Gelatin. Collagen from pig or cow. Not vegetarian, and the label will not usually say which animal, which matters for anyone whose reason is religious rather than dietary.
Hypromellose. Cellulose from wood pulp or cotton. No animal material at all. Often labelled “vegetarian capsule”, “veggie cap” or “HPMC”.
Pullulan is a third option, produced by fermentation and also plant-suitable. It is less common.
Where to look
Not in the Supplement Facts panel. That carries the vitamins and botanicals, the things the product is sold for.
The capsule shell lives in the ingredient list underneath, along with the fillers and flow agents. US rules say ingredients declared in the Supplement Facts panel need not be repeated in the ingredient list, and the split runs the other way too: the shell is not what you are buying, so it sits in the second list.
People checking for animal ingredients often read only one of the two panels. Read both, and for this particular question the lower one is where the answer is.
The reverse signal
Manufacturers using plant capsules advertise it, because it widens who can buy the product. “Vegetarian capsules” on the front of the bottle is common and reliable.
The inverse is a useful heuristic rather than a rule: a supplement that says nothing about its capsule, in a category where gelatin is standard, is more likely to be gelatin. Worth turning over first.
The one that catches people
Softgels. The soft, squeezable capsules used for fish oil and vitamin D are usually gelatin, and they read as a different category from hard capsules, so they get waved through by people who have already learned to check hard shells.
Plant-based softgels exist and are usually made from starch or carrageenan, and as with everything else here, the products that use them say so.
Sources
- 21 CFR 101.4: Food; designation of ingredients US Food and Drug Administration, via eCFR · ecfr.gov Ingredients declared in the Supplement Facts panel need not be repeated in the ingredient list, which is why the capsule shell appears in only one of the two.