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Benfotiamine (Fat-Soluble Vitamin B1)
Fat-soluble form of vitamin B1 with superior absorption that protects against glycation and supports nerve health.
What the evidence says
Benfotiamine doesn't have enough studies with structured effect-size data yet to pool a verdict. Browse the studies below for individual findings.
Most evidence is from high-quality meta-analyses and randomised trials published 1996–2025 with a typical study size of 70 participants.
Based on 46 studies · 2 meta-analyses · 24 RCTs · 3,922 total participants
Confidence
High confidenceWhat the studies found
By outcome
Short-term RCTs (BENDIP, BEDIP) show modest neuropathy-symptom relief and pharmacokinetics confirm ~5x absorption, but the longest, best-powered trials and Cochrane reviews found no benefit on nerve function or kidney outcomes.
25 randomised trials
80% were about Benfotiamine in an audit of 25 of them
Every randomised or controlled trial of Benfotiamine indexed in PubMed, not a hand-picked subset. Meta-analyses and systematic reviews are deliberately excluded from this count: most of them cover many compounds at once, so counting them would inflate it.
PubMed · as of Sep 2026
4 trials ongoing or recruiting · 12 completed on ClinicalTrials.gov
3 of the completed trials have posted results
Registered trials show research momentum for Benfotiamine, not proof of effect — a registration is a plan, and posted results are sponsor-reported, not peer-reviewed. They are never counted toward the evidence rating above.
Browse these trials on ClinicalTrials.govClinicalTrials.gov · as of Oct 2026
Benfotiamine is a synthetic, fat-soluble derivative of thiamine (B1) with 5x greater bioavailability. It reduces advanced glycation end-products (AGEs) that damage nerves and blood vessels in diabetes.
Used clinically for diabetic neuropathy and increasingly for anyone concerned about blood sugar, nerve health, or alcohol-related B1 depletion.
Blocks formation of damaging glycation products
Protects nerve cells from glucose damage
How Benfotiamine works — from molecular targets to health outcomes. Click an edge to see supporting research.This visualization is in beta — pathways are being refined and expanded.
Commonly used; may help with neuropathy
Thiamine may interfere with this cancer drug A grade for this interaction is held for clinical review and has not been validated, so no severity is given. The precaution still applies: ask a pharmacist about the exact supplement and medicine. Do not stop or change prescribed medicines based on this notice.
Tip: Take with food
Benfotiamine has an evidence score of 5.5/10 — moderate evidence based on 46 indexed studies, including 2 meta-analyses. Fat-soluble form of vitamin B1 with superior absorption that protects against glycation and supports nerve health. Representative study: PMID 25579852.
The commonly studied dose of Benfotiamine is 150-600mg daily. Individual needs vary — start at the lower end of the range and adjust based on how you respond.
The best time to take Benfotiamine is with meals. Take it with food. Benfotiamine is a lipid-soluble synthetic derivative of thiamine (vitamin B1).
Benfotiamine is generally well-tolerated and considered safe for most healthy adults at recommended doses. Reported side effects are uncommon and include GI upset. Use caution if any of these apply to you: Known allergy or hypersensitivity to Benfotiamine or related compounds.
CoQ10
Likely helpsA lipid-soluble antioxidant central to mitochondrial energy production, with the strongest trial support for fertility/IVF outcomes and heart failure.
Vitamin D3
Probably helpsHormone-like vitamin that regulates 1,000+ genes — deficiency is widespread and linked to poor immunity, depression, and bone loss.
Inositol
Probably helpsVitamin-like compound studied for hormonal and metabolic balance. Best evidence is for PCOS and gestational-diabetes prevention (multiple meta-analyses, though recent high-quality trials are mixed); anxiety/OCD data are older and thinner.
Multivitamin
Too few graded studiesNutritional insurance that fills micronutrient gaps. In the large COSMOS trial, a daily multivitamin improved memory and slowed cognitive decline in older adults — but it did not reduce total cancer, cardiovascular disease, or mortality.
Explore: Best supplements for Vitality & Longevity
Reviewed by Dr. Baher Al Hakim · Last reviewed May 2026 · evidence from 46 studies · how we score · editorial policy
This information is for educational purposes only. It is not a substitute for professional medical advice. Always consult a qualified healthcare provider before starting, stopping, or changing any supplement or medication.
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