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Vitamins & minerals · FROM DR. PURSER’S TEACHING

Vitamin B1 (Thiamine)

Helps convert food into usable energy and supports nerve function.

Based on teaching by Dan Purser, MD. How we prepare these guides

Updated Sep 23, 2026 · Educational reference

THE TEACHING CONNECTION

Helps convert food into usable energy and supports nerve function.

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.

How supplementation is approached

Review thiamine within food intake, digestion and the broader B-vitamin energy pattern. Consolidation into a suitable multivitamin or B-complex may be appropriate when several nutrients are involved. Significant suspected thiamine deficiency requires clinical assessment, not a slow self-directed supplement trial.

Food sources

Pork; beans; whole grains; enriched grains; seeds.

Supplement forms

Thiamine hydrochloride and thiamine mononitrate.

What to track and reassess

Record dietary or absorption risks, the preparation used and the clinical follow-up plan. Neurologic changes need prompt assessment.

From starting support to follow-up

If you and your clinician start a CMA replenishment plan, you may add one new product at a time, often waiting 3–7 days to see how you feel. A check-in is usually planned near ten weeks during an approximately 100-day period. Follow your written plan for amounts and timing. At follow-up, you may continue, change, or stop each item. This timetable does not automatically end longer-term support.

Names you may see

Vitamin B1 (Thiamine) · Thiamine