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Best Vitamin B1 (thiamin) products by transparent scoring (2026)

Single-ingredient products scored by public rules: dose fit, label transparency, data verification, company transparency, third-party testing. Not a measure of efficacy or safety. No paid placement.

Products ranked: 97 · Reference range: 1.2 – — mg (source) · Updated 2026-10-30

Dose fit 40 · Label transparency 20 · Data verification 15 · Company transparency 15 · Third-party test 10 — Methodology · Vitamin B1 (thiamin) →

RankProductPer dayScoreBreakdown
1 Vitamin B1 100 mg
Swanson · US NIH DSLD
100 mg90.0
Breakdown
Dose fit40.0/40
Label transparency20.0/20
Data verification15/15
Company transparency15.0/15
Third-party test0/10
2
tie
B-1 250 mg
Vitamin World · US NIH DSLD
250 mg88.0
Breakdown
Dose fit40.0/40
Label transparency18.0/20
Data verification15/15
Company transparency15.0/15
Third-party test0/10
2
tie
B1 100 mg
CVS Health · US NIH DSLD
100 mg88.0
Breakdown
Dose fit40.0/40
Label transparency18.0/20
Data verification15/15
Company transparency15.0/15
Third-party test0/10
2
tie
Vitamin B-1 100 mg
Nature's Bounty · US NIH DSLD
100 mg88.0
Breakdown
Dose fit40.0/40
Label transparency18.0/20
Data verification15/15
Company transparency15.0/15
Third-party test0/10
2
tie
Vitamin B1 100 mg
The Vitamin Shoppe · US NIH DSLD
100 mg88.0
Breakdown
Dose fit40.0/40
Label transparency18.0/20
Data verification15/15
Company transparency15.0/15
Third-party test0/10
2
tie
Vitamin B1 100 mg
Nature Made · US NIH DSLD
100 mg88.0
Breakdown
Dose fit40.0/40
Label transparency18.0/20
Data verification15/15
Company transparency15.0/15
Third-party test0/10
2
tie
Vitamin B1 250 mg
The Vitamin Shoppe · US NIH DSLD
250 mg88.0
Breakdown
Dose fit40.0/40
Label transparency18.0/20
Data verification15/15
Company transparency15.0/15
Third-party test0/10
2
tie
Vitamin B1 250 mg
Spring Valley · US NIH DSLD
250 mg88.0
Breakdown
Dose fit40.0/40
Label transparency18.0/20
Data verification15/15
Company transparency15.0/15
Third-party test0/10
9
tie
Vitamin B-1 100 mg Thiamin HCl
Nature's Way · US NIH DSLD
100 mg85.0
Breakdown
Dose fit40.0/40
Label transparency20.0/20
Data verification15/15
Company transparency10.0/15
Third-party test0/10
9
tie
Vitamin B1 100 mg
Douglas Laboratories · US NIH DSLD
100 mg85.0
Breakdown
Dose fit40.0/40
Label transparency20.0/20
Data verification15/15
Company transparency10.0/15
Third-party test0/10
11
tie
MapleLife¿ Nutrition & Formula and/or NutriCentury¿ Vitamin B1 (Thiamine)
Nutralab Canada Corp. · Health Canada LNHPD
50 mg84.0
Breakdown
Dose fit40.0/40
Label transparency14.0/20
Data verification15/15
Company transparency15.0/15
Third-party test0/10
11
tie
MapleLife¿ Nutrition & Formula and/or NutriLab¿ and/or NutriCentury¿ Vitamin B1 (Thiamine)
Nutralab Canada Corp. · Health Canada LNHPD
100 mg84.0
Breakdown
Dose fit40.0/40
Label transparency14.0/20
Data verification15/15
Company transparency15.0/15
Third-party test0/10
13
tie
B-1 100 mg Thiamin
Carlson · US NIH DSLD
100 mg83.0
Breakdown
Dose fit40.0/40
Label transparency18.0/20
Data verification15/15
Company transparency10.0/15
Third-party test0/10
13
tie
High Potency B1 100 mg
Sundown Naturals · US NIH DSLD
100 mg83.0
Breakdown
Dose fit40.0/40
Label transparency18.0/20
Data verification15/15
Company transparency10.0/15
Third-party test0/10
13
tie
Super Potency Vitamin B 1 (Thiamin) 500 mg
Solgar · US NIH DSLD
500 mg83.0
Breakdown
Dose fit40.0/40
Label transparency18.0/20
Data verification15/15
Company transparency10.0/15
Third-party test0/10
13
tie
Vitamin B1 (Thiamin) 100 mg
Solgar · US NIH DSLD
100 mg83.0
Breakdown
Dose fit40.0/40
Label transparency18.0/20
Data verification15/15
Company transparency10.0/15
Third-party test0/10
13
tie
Vitamin B1 100 mg
Bluebonnet · US NIH DSLD
100 mg83.0
Breakdown
Dose fit40.0/40
Label transparency18.0/20
Data verification15/15
Company transparency10.0/15
Third-party test0/10
13
tie
Vitamin B1 100 mg
Country Life · US NIH DSLD
100 mg83.0
Breakdown
Dose fit40.0/40
Label transparency18.0/20
Data verification15/15
Company transparency10.0/15
Third-party test0/10
19
tie
Allithiamine (Vitamin B1) 50 mg
Ecological Formulas · US NIH DSLD
50 mg75.0
Breakdown
Dose fit40.0/40
Label transparency20.0/20
Data verification15/15
Company transparency0/15
Third-party test0/10
19
tie
B-1 100 mg
Nature's Truth · US NIH DSLD
200 mg75.0
Breakdown
Dose fit40.0/40
Label transparency20.0/20
Data verification15/15
Company transparency0/15
Third-party test0/10
19
tie
B1 100 mg 100 mg75.0
Breakdown
Dose fit40.0/40
Label transparency20.0/20
Data verification15/15
Company transparency0/15
Third-party test0/10
19
tie
B1 25 mg Cherry Burst
EZ Melts · US NIH DSLD
25 mg75.0
Breakdown
Dose fit40.0/40
Label transparency20.0/20
Data verification15/15
Company transparency0/15
Third-party test0/10
19
tie
Thiamin 100 mg
Celebrate · US NIH DSLD
100 mg75.0
Breakdown
Dose fit40.0/40
Label transparency20.0/20
Data verification15/15
Company transparency0/15
Third-party test0/10
19
tie
Thiamin 50 mg
Seeking Health · US NIH DSLD
50 mg75.0
Breakdown
Dose fit40.0/40
Label transparency20.0/20
Data verification15/15
Company transparency0/15
Third-party test0/10
19
tie
Thiamin Vitamin B1 100 Milligrams
NutraBio · US NIH DSLD
100 mg75.0
Breakdown
Dose fit40.0/40
Label transparency20.0/20
Data verification15/15
Company transparency0/15
Third-party test0/10
19
tie
Thiamine HCl
BulkSupplements.com · US NIH DSLD
100 mg75.0
Breakdown
Dose fit40.0/40
Label transparency20.0/20
Data verification15/15
Company transparency0/15
Third-party test0/10
19
tie
Thiamine HCl (Vitamin B1)
BulkSupplements.com · US NIH DSLD
100 mg75.0
Breakdown
Dose fit40.0/40
Label transparency20.0/20
Data verification15/15
Company transparency0/15
Third-party test0/10
19
tie
Thiamine Mononitrate Vitamin B1 Powder 200 mg
BulkSupplements.com · US NIH DSLD
162 mg75.0
Breakdown
Dose fit40.0/40
Label transparency20.0/20
Data verification15/15
Company transparency0/15
Third-party test0/10
19
tie
Vitamin B-1 Thiamin HCl
Voitenko Wellness · US NIH DSLD
100 mg75.0
Breakdown
Dose fit40.0/40
Label transparency20.0/20
Data verification15/15
Company transparency0/15
Third-party test0/10
19
tie
Vitamin B1
Herb-Science · US NIH DSLD
6 mg75.0
Breakdown
Dose fit40.0/40
Label transparency20.0/20
Data verification15/15
Company transparency0/15
Third-party test0/10
19
tie
Vitamin B1
Earthborn Elements · US NIH DSLD
525 mg75.0
Breakdown
Dose fit40.0/40
Label transparency20.0/20
Data verification15/15
Company transparency0/15
Third-party test0/10
19
tie
Vitamin B1 (Thiamine Mononitrate)
BulkSupplements.com · US NIH DSLD
92 mg75.0
Breakdown
Dose fit40.0/40
Label transparency20.0/20
Data verification15/15
Company transparency0/15
Third-party test0/10
19
tie
Vitamin B1 100 mg
Standard Vitamins · US NIH DSLD
100 mg75.0
Breakdown
Dose fit40.0/40
Label transparency20.0/20
Data verification15/15
Company transparency0/15
Third-party test0/10
19
tie
Vitamin B1 100 mg
Nutricost · US NIH DSLD
100 mg75.0
Breakdown
Dose fit40.0/40
Label transparency20.0/20
Data verification15/15
Company transparency0/15
Third-party test0/10
19
tie
Vitamin B1 100 mg
AvPak · US NIH DSLD
100 mg75.0
Breakdown
Dose fit40.0/40
Label transparency20.0/20
Data verification15/15
Company transparency0/15
Third-party test0/10
19
tie
Vitamin B1 100 mg
Meijer · US NIH DSLD
100 mg75.0
Breakdown
Dose fit40.0/40
Label transparency20.0/20
Data verification15/15
Company transparency0/15
Third-party test0/10
19
tie
Vitamin B1 100 mg
Vitamatic · US NIH DSLD
100 mg75.0
Breakdown
Dose fit40.0/40
Label transparency20.0/20
Data verification15/15
Company transparency0/15
Third-party test0/10
19
tie
Vitamin B1 250 mg
Standard Vitamins · US NIH DSLD
250 mg75.0
Breakdown
Dose fit40.0/40
Label transparency20.0/20
Data verification15/15
Company transparency0/15
Third-party test0/10
19
tie
Vitamin B1 500 mg
Nutricost · US NIH DSLD
500 mg75.0
Breakdown
Dose fit40.0/40
Label transparency20.0/20
Data verification15/15
Company transparency0/15
Third-party test0/10
19
tie
Vitamin B1 500 mg
Standard Vitamins · US NIH DSLD
500 mg75.0
Breakdown
Dose fit40.0/40
Label transparency20.0/20
Data verification15/15
Company transparency0/15
Third-party test0/10
19
tie
Vitamin B1 500 mg
Dr. Clark Store · US NIH DSLD
500 mg75.0
Breakdown
Dose fit40.0/40
Label transparency20.0/20
Data verification15/15
Company transparency0/15
Third-party test0/10
19
tie
Vitamin B1 500 mg 500 mg75.0
Breakdown
Dose fit40.0/40
Label transparency20.0/20
Data verification15/15
Company transparency0/15
Third-party test0/10
19
tie
Vitamin B1 500 mg
NutraBio · US NIH DSLD
500 mg75.0
Breakdown
Dose fit40.0/40
Label transparency20.0/20
Data verification15/15
Company transparency0/15
Third-party test0/10
19
tie
Vitamin B1 500 mg
Vitamatic · US NIH DSLD
500 mg75.0
Breakdown
Dose fit40.0/40
Label transparency20.0/20
Data verification15/15
Company transparency0/15
Third-party test0/10
19
tie
Vitamin B1 High Potency 500 mg
BIOVEA · US NIH DSLD
500 mg75.0
Breakdown
Dose fit40.0/40
Label transparency20.0/20
Data verification15/15
Company transparency0/15
Third-party test0/10
19
tie
Vitamin B1 Thiamine Mononitrate Capsules 100 mg
BulkSupplements.com · US NIH DSLD
100 mg75.0
Breakdown
Dose fit40.0/40
Label transparency20.0/20
Data verification15/15
Company transparency0/15
Third-party test0/10
47
tie
B-1 100 mg (Thiamin Hydrochloride) 100 mg73.0
Breakdown
Dose fit40.0/40
Label transparency18.0/20
Data verification15/15
Company transparency0/15
Third-party test0/10
47
tie
B-1 250 mg Thiamin HCl
PhysioLogics · US NIH DSLD
250 mg73.0
Breakdown
Dose fit40.0/40
Label transparency18.0/20
Data verification15/15
Company transparency0/15
Third-party test0/10
47
tie
B1 100 mg
Thompson · US NIH DSLD
100 mg73.0
Breakdown
Dose fit40.0/40
Label transparency18.0/20
Data verification15/15
Company transparency0/15
Third-party test0/10
47
tie
High Potency Vitamin B1 300 mg
Natures Plus · US NIH DSLD
300 mg73.0
Breakdown
Dose fit40.0/40
Label transparency18.0/20
Data verification15/15
Company transparency0/15
Third-party test0/10
47
tie
Vitamin B-1 (Thiamin) 100 mg
Geri-Care · US NIH DSLD
100 mg73.0
Breakdown
Dose fit40.0/40
Label transparency18.0/20
Data verification15/15
Company transparency0/15
Third-party test0/10
47
tie
Vitamin B-1 100 mg Capsule
VitalBulk · US NIH DSLD
100 mg73.0
Breakdown
Dose fit40.0/40
Label transparency18.0/20
Data verification15/15
Company transparency0/15
Third-party test0/10
47
tie
Vitamin B-1 100 mg Capsule
Vitalbulk · US NIH DSLD
100 mg73.0
Breakdown
Dose fit40.0/40
Label transparency18.0/20
Data verification15/15
Company transparency0/15
Third-party test0/10
47
tie
Vitamin B-1 250 mg Capsule
VitalBulk · US NIH DSLD
250 mg73.0
Breakdown
Dose fit40.0/40
Label transparency18.0/20
Data verification15/15
Company transparency0/15
Third-party test0/10
47
tie
Vitamin B-1 250 mg Capsule
Vitalbulk · US NIH DSLD
250 mg73.0
Breakdown
Dose fit40.0/40
Label transparency18.0/20
Data verification15/15
Company transparency0/15
Third-party test0/10
47
tie
Vitamin B-1 50 mg
Vitalbulk · US NIH DSLD
50 mg73.0
Breakdown
Dose fit40.0/40
Label transparency18.0/20
Data verification15/15
Company transparency0/15
Third-party test0/10
47
tie
Vitamin B-1 500 mg Capsule
VitalBulk · US NIH DSLD
500 mg73.0
Breakdown
Dose fit40.0/40
Label transparency18.0/20
Data verification15/15
Company transparency0/15
Third-party test0/10
47
tie
Vitamin B-1 500 mg Capsule
Vitalbulk · US NIH DSLD
500 mg73.0
Breakdown
Dose fit40.0/40
Label transparency18.0/20
Data verification15/15
Company transparency0/15
Third-party test0/10
47
tie
Vitamin B1
Whole Foods · US NIH DSLD
100 mg73.0
Breakdown
Dose fit40.0/40
Label transparency18.0/20
Data verification15/15
Company transparency0/15
Third-party test0/10
47
tie
Vitamin B1 100 mg
Exchange Select X · US NIH DSLD
100 mg73.0
Breakdown
Dose fit40.0/40
Label transparency18.0/20
Data verification15/15
Company transparency0/15
Third-party test0/10
47
tie
Vitamin B1 100 mg
Foods Plus · US NIH DSLD
100 mg73.0
Breakdown
Dose fit40.0/40
Label transparency18.0/20
Data verification15/15
Company transparency0/15
Third-party test0/10
47
tie
Vitamin B1 100 mg
Mason Natural · US NIH DSLD
100 mg73.0
Breakdown
Dose fit40.0/40
Label transparency18.0/20
Data verification15/15
Company transparency0/15
Third-party test0/10
47
tie
Vitamin B1 100 mg
Bronson Laboratories · US NIH DSLD
100 mg73.0
Breakdown
Dose fit40.0/40
Label transparency18.0/20
Data verification15/15
Company transparency0/15
Third-party test0/10
64 Natural Vitamin B1+
Dr. Berg · US NIH DSLD
50.3 mg72.0
Breakdown
Dose fit40.0/40
Label transparency20.0/20
Data verification12/15
Company transparency0/15
Third-party test0/10
65
tie
AOR Benfotiamine 80 mg69.0
Breakdown
Dose fit40.0/40
Label transparency14.0/20
Data verification15/15
Company transparency0/15
Third-party test0/10
65
tie
B-One CAPSULES
Pharmaline Inc. · Health Canada LNHPD
100 mg69.0
Breakdown
Dose fit40.0/40
Label transparency14.0/20
Data verification15/15
Company transparency0/15
Third-party test0/10
65
tie
B-One Tablets
Pharmaline Inc. · Health Canada LNHPD
100 mg69.0
Breakdown
Dose fit40.0/40
Label transparency14.0/20
Data verification15/15
Company transparency0/15
Third-party test0/10
65
tie
Ba 100 mg
2158894 Ontario Inc. · Health Canada LNHPD
100 mg69.0
Breakdown
Dose fit40.0/40
Label transparency14.0/20
Data verification15/15
Company transparency0/15
Third-party test0/10
65
tie
FATIGON TABLET
THE ZYFAS MEDICAL CO., · Malaysia NPRA
100 mg69.0
Breakdown
Dose fit40.0/40
Label transparency14.0/20
Data verification15/15
Company transparency0/15
Third-party test0/10
65
tie
Insect Defend Patch
Safety in Motion · Health Canada LNHPD
75 mg69.0
Breakdown
Dose fit40.0/40
Label transparency14.0/20
Data verification15/15
Company transparency0/15
Third-party test0/10
65
tie
LPM VITAMIN B1, B6, B12 + GINKGO BILOBA + L-CARNITINE Capsule
LPM · Malaysia NPRA
63.5 mg69.0
Breakdown
Dose fit40.0/40
Label transparency14.0/20
Data verification15/15
Company transparency0/15
Third-party test0/10
65
tie
Organika Health Products Inc. Vitamin B1 Capsules
Organika Health Products Inc. · Health Canada LNHPD
100 mg69.0
Breakdown
Dose fit40.0/40
Label transparency14.0/20
Data verification15/15
Company transparency0/15
Third-party test0/10
65
tie
Organixs Benfotiamine 100mg Capsule
Organixs · Malaysia NPRA
100 mg69.0
Breakdown
Dose fit40.0/40
Label transparency14.0/20
Data verification15/15
Company transparency0/15
Third-party test0/10
65
tie
Trophic - Vitamin B1
Trophic Canada · Health Canada LNHPD
100 mg69.0
Breakdown
Dose fit40.0/40
Label transparency14.0/20
Data verification15/15
Company transparency0/15
Third-party test0/10
65
tie
UniVits B1 100mg Tablet 127 mg69.0
Breakdown
Dose fit40.0/40
Label transparency14.0/20
Data verification15/15
Company transparency0/15
Third-party test0/10
65
tie
VITAMIN B1 100 mg69.0
Breakdown
Dose fit40.0/40
Label transparency14.0/20
Data verification15/15
Company transparency0/15
Third-party test0/10
65
tie
VITAMIN B1 (Thiamine Hydrochloride Tablets USP) 100 mg 100 mg69.0
Breakdown
Dose fit40.0/40
Label transparency14.0/20
Data verification15/15
Company transparency0/15
Third-party test0/10
65
tie
VITAMIN B1 (Thiamine Hydrochloride Tablets USP) 50 mg 50 mg69.0
Breakdown
Dose fit40.0/40
Label transparency14.0/20
Data verification15/15
Company transparency0/15
Third-party test0/10
65
tie
VITAMIN B1 100 Vitamin B1 Tablets 100 mg
Jaapharm Canada Inc. · Health Canada LNHPD
100 mg69.0
Breakdown
Dose fit40.0/40
Label transparency14.0/20
Data verification15/15
Company transparency0/15
Third-party test0/10
65
tie
VITAMIN B1 50 Vitamin B1 Tablets 50 mg
Jaapharm Canada Inc. · Health Canada LNHPD
50 mg69.0
Breakdown
Dose fit40.0/40
Label transparency14.0/20
Data verification15/15
Company transparency0/15
Third-party test0/10
65
tie
Vitamin B1 100 mg69.0
Breakdown
Dose fit40.0/40
Label transparency14.0/20
Data verification15/15
Company transparency0/15
Third-party test0/10
65
tie
Vitamin B1 100 mg69.0
Breakdown
Dose fit40.0/40
Label transparency14.0/20
Data verification15/15
Company transparency0/15
Third-party test0/10
65
tie
Vitamin B1
WN Pharmaceuticals Ltd · Health Canada LNHPD
100 mg69.0
Breakdown
Dose fit40.0/40
Label transparency14.0/20
Data verification15/15
Company transparency0/15
Third-party test0/10
65
tie
Vitamin B1 100mg Tablets
Rayan Pharma Inc. · Health Canada LNHPD
100 mg69.0
Breakdown
Dose fit40.0/40
Label transparency14.0/20
Data verification15/15
Company transparency0/15
Third-party test0/10
65
tie
Vitamin B1 100mgTablets 100 mg69.0
Breakdown
Dose fit40.0/40
Label transparency14.0/20
Data verification15/15
Company transparency0/15
Third-party test0/10
65
tie
Vitamin B1 Tablets
Odan Laboratories Ltd. · Health Canada LNHPD
100 mg69.0
Breakdown
Dose fit40.0/40
Label transparency14.0/20
Data verification15/15
Company transparency0/15
Third-party test0/10
65
tie
WELLS VITAMIN B1-B6-B12 TABLETS
NGL TRADING SDN BHD · Malaysia NPRA
100 mg69.0
Breakdown
Dose fit40.0/40
Label transparency14.0/20
Data verification15/15
Company transparency0/15
Third-party test0/10
65
tie
WHCCL Vitamin B1 50mg Tablet
Esprit Care Sdn. Bhd. · Malaysia NPRA
63.6 mg69.0
Breakdown
Dose fit40.0/40
Label transparency14.0/20
Data verification15/15
Company transparency0/15
Third-party test0/10
89 Nova Vitamin B 1
Nova NHP Research & Consulting Co · Health Canada LNHPD below_ref
1 mg62.3
Breakdown
Dose fit33.3/40
Label transparency14.0/20
Data verification15/15
Company transparency0/15
Third-party test0/10
90
tie
Benfotiamine 150mg 120 Gelatin Capsules Per Bottle
Benfotiamine Inc. · Brand website
150 mg62.0
Breakdown
Dose fit40.0/40
Label transparency16.0/20
Data verification6/15
Company transparency0/15
Third-party test0/10
90
tie
Vitamin Supplement For Diabetes - Benfotiamine 150mg 120 Gelatin Capsules Per Bottle
Benfotiamine Inc. · Brand website
150 mg62.0
Breakdown
Dose fit40.0/40
Label transparency16.0/20
Data verification6/15
Company transparency0/15
Third-party test0/10
92
tie
2 BenfoComplete™ Benfotiamine 150mg 120 Gelatin Capsules - 2 Bottles
Benfotiamine Inc. · Brand website
150 mg60.0
Breakdown
Dose fit40.0/40
Label transparency14.0/20
Data verification6/15
Company transparency0/15
Third-party test0/10
92
tie
4 BenfoComplete™ Benfotiamine 150mg 120 Gelatin Capsules - 4 Bottles
Benfotiamine Inc. · Brand website
150 mg60.0
Breakdown
Dose fit40.0/40
Label transparency14.0/20
Data verification6/15
Company transparency0/15
Third-party test0/10
92
tie
Amazon BenfoComplete™ G150 Benfotiamine 150mg 120 Gelatin Capsules - 3 Bottles
Benfotiamine Inc. · Brand website
150 mg60.0
Breakdown
Dose fit40.0/40
Label transparency14.0/20
Data verification6/15
Company transparency0/15
Third-party test0/10
92
tie
AutoShip & Save - Benfotiamine 150mg Capsules: 3 Bottles Every 90 Days with FREE SHIPPING
Benfotiamine Inc. · Brand website
150 mg60.0
Breakdown
Dose fit40.0/40
Label transparency14.0/20
Data verification6/15
Company transparency0/15
Third-party test0/10
92
tie
AutoShip & Save - Benfotiamine 150mg Capsules: 6 Bottles Every 180 Days with FREE SHIPPING
Benfotiamine Inc. · Brand website
150 mg60.0
Breakdown
Dose fit40.0/40
Label transparency14.0/20
Data verification6/15
Company transparency0/15
Third-party test0/10
92
tie
BenfoComplete™ G150 Benfotiamine 150mg 120 Gelatin Capsules - 1 Bottle
Benfotiamine Inc. · Brand website
150 mg60.0
Breakdown
Dose fit40.0/40
Label transparency14.0/20
Data verification6/15
Company transparency0/15
Third-party test0/10
For information only; not medical advice. Talk to a doctor or pharmacist before starting or stopping any supplement.
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