A supplement can look plant-based and still hide an animal-derived ingredient...

https://dominicksuniqueblogs.talesignal.com/posts/why-do-brands-put-vegan-on-the-front-but-skip-details-on-the-back

A supplement can look plant-based and still hide an animal-derived ingredient in its capsule shell. This article shows how to spot gelatin versus HPMC, why “vegan” claims aren’t federally defined, and what third-party marks can—and can’t—tell you