thiamine

Thiamine derives its vegan and vegetarian status from thiamine mononitrate, thiamine hydrochloride.

Classifications are made based on the available commercial supply of the ingredient, and are made based on the criteria on our classifications page.

Commercially available thiamine is vegan and vegetarian.

Thiamine, also known as vitamin B1, is synthetically produced as either thiamine mononitrate or thiamine hydrochloride. The first two sources claim it is sometimes non-vegan, however all sources I found suggest the only commercially available forms are the two mentioned previously which are completely synthetic and Ullman's encyclopedia has a table showing that the natural concentration of thiamine is much higher in soybeans than pork or beef so it seems very unlikely that any industrial production would extract it from those sources.

Sources

1. https://www.veganpeace.com/ingredients/ingredients.htm#Vitamin_B1
2. https://www.vrg.org/ingredients/#thiamin
3. Létinois, U., Moine, G., & Hohmann, H.-P. (2020). Vitamin, 6. VitaminB₁(Thiamin). Ullmann’s Encyclopedia of Industrial Chemistry, 1–22. Portico.
   https://doi.org/10.1002/14356007.o27_o09.pub2