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Types of Vitamin B1 (Thiamine): Forms & Bioavailability

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Forms Comparison

FormBioavailabilityBest For
Thiamine Hydrochloride (HCl)ModerateGeneral supplementation — standard, well-absorbed water-soluble form
Thiamine MononitrateModerateFood fortification and multivitamins — stable, widely used
BenfotiamineHighDiabetic neuropathy and nerve support — fat-soluble with 5x higher bioavailability than thiamine HCl
SulbutiamineHighCognitive enhancement — crosses blood-brain barrier more effectively

Thiamine Hydrochloride (HCl)

Bioavailability: Moderate. Best for: General supplementation — standard, well-absorbed water-soluble form.

Thiamine Mononitrate

Bioavailability: Moderate. Best for: Food fortification and multivitamins — stable, widely used.

Benfotiamine

Bioavailability: High. Best for: Diabetic neuropathy and nerve support — fat-soluble with 5x higher bioavailability than thiamine HCl.

Sulbutiamine

Bioavailability: High. Best for: Cognitive enhancement — crosses blood-brain barrier more effectively.

Full Vitamin B1 (Thiamine) Guide

References

  1. (). Benfotiamine in diabetic polyneuropathy (BENDIP): results of a randomised, double blind, placebo-controlled clinical study. Experimental and Clinical Endocrinology & Diabetes. DOI
  2. (). Thiamine deficiency disorders: diagnosis, prevalence, and a roadmap for global control programs. Annals of the New York Academy of Sciences. DOI
  3. (). Thiamine supplementation in symptomatic chronic heart failure: a randomized, double-blind, placebo-controlled, cross-over pilot study. Clinical Research in Cardiology. DOI