In brief: Thiamin (vitamin B1) is a water-soluble B vitamin and a coenzyme in central metabolic pathways. The body stores only small amounts, so regular intake is required.[1]
Reference intakes
| Group | US NIH recommendation |
|---|---|
| Men | 1.2 mg/day |
| Women | 1.1 mg/day |
| Pregnancy | 1.4 mg/day |
| Breastfeeding | 1.4 mg/day |
Good sources
Whole grains, pork, fish, legumes, seeds and fortified foods provide thiamin.[1]
Not a stimulant
Vitamin B1 is required for normal energy metabolism. When intake is already adequate, extra thiamin does not work like caffeine or automatically increase energy.
FAQ
Is thiamin vitamin B1?
Yes.
Does the body store much B1?
No.
Who is at higher risk of deficiency?
Among others, people with alcohol dependence, bariatric surgery or certain chronic illnesses.
Does B1 give instant energy?
No.
Conclusion
Thiamin is essential and widely available in food. Supplements are most useful when there is a clear risk or confirmed deficiency.
