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Ingredient · Vitamin Mineral

thiamin mononitrate (vitamin b1)

Cleaner · 7/10, higher is cleaner

How we reached this

Vitamin B1 fortification form. Synthetic-equivalent of dietary thiamine. FDA GRAS at fortification levels. No upper limit established for thiamine.

Sources · 1

Also listed as

thiamin mononitrate

Products containing this · 14

About this rating

Ratings run 1–10, higher is cleaner, and are set editorially against the sources above — see the methodology page for how an ingredient rating becomes part of a product score. Last reviewed 2026-05-23.