Is Physostigmine [USAN:BAN] vegan?

Physostigmine is also known as Physostigmine [USAN:BAN].

Physostigmine, also known as eserine, is an alkaloid naturally found in the Calabar bean (Physostigma venenosum) and used medicinally as a cholinesterase inhibitor. It and its salts are restricted substances in cosmetic products.

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