What it does
Helps convert food into usable energy and supports nerve function.
Possible deficiency symptoms
Severe deficiency can cause weakness, nerve problems, confusion and heart problems.
Food sources
Pork; beans; whole grains; enriched grains; seeds.
Supplement forms
Thiamine hydrochloride and thiamine mononitrate.
Before taking a supplement
Risk is higher in some malabsorption states and heavy alcohol use. New confusion needs medical assessment.
Questions for your visit
Could my diet, medicines, absorption or another condition explain my concern? What evidence would support treatment, and how would we check whether it helps?
Names you may see
Vitamin B1 (Thiamine) · Thiamine
Sources & perspective
This is an editorial adaptation of the Purser Wellness nutrient reference app. Purser teaching connections are labeled separately from clinical interpretation. Private cases and individual treatment protocols are not reproduced.
Use the public resources below for additional context.
NIH Office of Dietary Supplements: Vitamin B1 (Thiamine)
