Vitamin B1 (thiamine) is one of the water-soluble B-complex vitamins and supports human health in a multitude of ways.

The vitamin contributes to
- normal energy metabolism
- the normal function of the heart
- the normal function of the nervous system
- normal psychological functions

The following groups of people may have higher vitamin B1 requirements:
Adolescents, pregnant and breastfeeding women and elderly people.

Sources: Pork, whole-grain products, pulses, certain types of fish, like plaice and tuna, and potatoes.