Thiamin, also known as vitamin B1, is a water-soluble vitamin important for energy metabolism. The body stores only small amounts and needs a regular supply. Nonspecific tiredness alone, however, does not prove thiamin deficiency.
Understand requirements through the diet
Sources include whole grains, legumes, pork, seeds and appropriately fortified foods. Individual requirements depend on age and life circumstances, among other factors. If supply is already adequate, a higher intake from a supplement is not a proven way to improve performance.
Who may be at higher risk of deficiency
Severe malnutrition, alcohol dependence, persistent vomiting and certain gastrointestinal conditions can impair supply. Appropriate follow-up is also important after bariatric surgery. Symptoms need to be assessed in the context of diet, illnesses and medicines.
Do not wait with neurological warning signs
New confusion, abnormal eye movements or an unsteady gait require immediate medical assessment, especially with malnutrition or alcohol dependence. Wernicke encephalopathy is a medical emergency. Do not wait to see whether a vitamin tablet chosen yourself will help.
If severe deficiency is suspected, the medical team determines the form and urgency of treatment. Injections belong in professional hands. Treatment must not be delayed by experimenting independently with low or high amounts.
Frequently asked questions
Can I identify a deficiency from tiredness?
Tiredness has many causes. Diagnosis requires more than this single symptom and particularly considers risk factors.
Does water-soluble mean unlimited intake makes sense?
No. Supplementation should match an identifiable need. It replaces neither adequate nutrition nor assessment of an underlying illness.
