Allithiamine

A niche B1 form mainly relevant for people with thiamine deficiency or impaired absorption. Healthy individuals eating a balanced diet rarely need it.

A rough internal score reflecting quantity, quality, and consistency of human evidence. Not a clinical recommendation.

Historical Japanese research demonstrated superior tissue uptake vs thiamine HCl. Clinical data are old and limited. Modern interest centres on benfotiamine instead.

• Higher bioavailability than standard thiamine
• May support energy metabolism in deficient individuals
• Historical use in fatigue-related conditions

50–100 mg/day is commonly cited, though clinical dose-ranging studies are limited.

• Garlic-like body odour
• Mild GI upset

Garlic-like odour is common. Quality control varies between manufacturers.

Most modern research has shifted to benfotiamine. Head-to-head data with other lipid-soluble thiamines are sparse.

• Energy38
• Focus30