BioActive Vitamin B1

Standard thiamine supplements stop at absorption. B1 only becomes functional once your body converts it into its active coenzyme form — a conversion that requires magnesium. BioActive Vitamin B1™ pairs fat-soluble benfotiamine with magnesium, P-5-P, and alpha-lipoic acid to unlock B1's full role in nerve, brain, and cellular energy function.* Available in two strengths: Foundation Strength (150mg) is our research-informed daily dose for a consistent B1 routine. Maximum Strength (600mg) delivers comprehensive daily support for those with higher B1 needs.* Superior delivery. Benfotiamine has been studied to produce 5–11× higher blood thiamine levels than standard thiamine, reaching the nerve tissue and mitochondria where B1 does its work.* Gentle for daily use. Fat-soluble and absorbed through a natural transport pathway — no flush, no stomach upset, no cycling. Stimulant-free. Clean label. Vegan, gluten-free, non-GMO, soy-free. Manufactured in a GMP-certified facility and third-party tested.