Thiamine Hydrochloride (Thiamine HCl)
Thiamine Hydrochloride (Thiamine HCl) is a tier 1 form of Thiamine (Vitamin B1), used in 5,591 on-market products and providing 78.7% elemental thiamine (vitamin b1) by weight.
5,591
on-market products
tier 1
quality tier
78.7%
elemental fraction
Basis: thiamine cation MW 265.36 / thiamine HCl MW 337.26 (both confirmed PubChem formulas)
Why this tier: Regulatory/industry assessments treat HCl and mononitrate as bioequivalent -- both fully hydrolyze to the same thiamine cation and convert to the active cofactor thiamine pyrophosphate; HCl's higher water solubility is used in liquid/injectable products.
Source: EFSA feed-additive dossier assessments, PMC12035548/PMC11979709