What is Vitamin B1? Uses, warnings & side effects

Updated May 14, 2025  •  Published Apr 8, 2022

Vitamin B1 overview

BRAND NAMES:

Generic Names:

  • Thiamine Hcl

Uses:

Therapeutic Classes:

Forms:

How it’s taken:

What is Vitamin B1 used for?

What form(s) does Vitamin B1 come in?

What are common Vitamin B1 dosages?

  • Tablet 100MG

How to take Vitamin B1

What to do if you miss a dose of Vitamin B1

Vitamin B1 contraindications - Who shouldn't take Vitamin B1?

Vitamin B1 warnings

Vitamin B1 interactions & what to avoid when taking Vitamin B1

Vitamin B1 side effects - How does Vitamin B1 make you feel?