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Cheapest Vitamin B1 (Thiamine Mononitrate) on iHerb

Ranked by real cost per 100 mg of Vitamin B1 (Thiamine Mononitrate) — cheapest value first.

Prices updated Jul 25, 2026 · 25 products · Prices in USD

The priciest option here costs about 1,316.0× more per 100 mg of Vitamin B1 (Thiamine Mononitrate) than the best-value pick Vitamatic. For the same daily dose, choosing by cost per unit instead of sticker price can meaningfully cut your yearly spend.
#ProductDoseServingsPrice (USD)Cost per 100 mg
1
Vitamatic, Vitamin B1 Powder, Unflavored, 3.5 oz (100 g)
Vitamatic, Vitamin B1 Powder, Unflavored, 3.5 oz (100 g)
Vitamatic
500 mg20014.990.015View on iHerb →
2
Emerald Laboratories, Coenzymated B-Healthy with L-5-Methyltetrahydrofolate, 120 Vegetable Caps
Emerald Laboratories, Coenzymated B-Healthy with L-5-Methyltetrahydrofolate, 120 Vegetable Caps
Emerald Laboratories
50 mg6044.961.50View on iHerb →
3
Emerald Laboratories, B-Healthy, 60 Vegetable Caps
Emerald Laboratories, B-Healthy, 60 Vegetable Caps
Emerald Laboratories
50 mg3025.161.68View on iHerb →
4
Emerald Laboratories, CoEnzymated Complete 1-Daily Multi, 60 Vegetable Caps
Emerald Laboratories, CoEnzymated Complete 1-Daily Multi, 60 Vegetable Caps
Emerald Laboratories
25 mg6034.162.28View on iHerb →
5
Bluebonnet Nutrition, Ladies' Choice, Whole Food Based Multiple, Ladies 18-49, 90 Caplets
Bluebonnet Nutrition, Ladies' Choice, Whole Food Based Multiple, Ladies 18-49, 90 Caplets
Bluebonnet Nutrition
50 mg3034.362.29View on iHerb →
6
Emerald Laboratories, Coenzymated Complete 1-Daily Multi, 30 Vegetable Caps
Emerald Laboratories, Coenzymated Complete 1-Daily Multi, 30 Vegetable Caps
Emerald Laboratories
25 mg3018.862.51View on iHerb →
7
Paradise Herbs, Earth's Blend ®, One Daily Superfood Multi-Vitamin, No Iron, 60 Vegetarian Capsules
Paradise Herbs, Earth's Blend ®, One Daily Superfood Multi-Vitamin, No Iron, 60 Vegetarian Capsules
Paradise Herbs
10 mg6017.993.00View on iHerb →
8
Emerald Laboratories, CoEnzymated Complete Clinical + Multi, 120 Vegetable Caps
Emerald Laboratories, CoEnzymated Complete Clinical + Multi, 120 Vegetable Caps
Emerald Laboratories
50 mg3049.463.30View on iHerb →
9
Emerald Laboratories, Coenzymated Women's 45+ 1-Daily Multi, 60 Vegetable Caps
Emerald Laboratories, Coenzymated Women's 45+ 1-Daily Multi, 60 Vegetable Caps
Emerald Laboratories
20 mg6040.463.37View on iHerb →
10
Emerald Laboratories, CoEnzymated Prenatal 1-Daily Multi, 60 Vegetable Caps
Emerald Laboratories, CoEnzymated Prenatal 1-Daily Multi, 60 Vegetable Caps
Emerald Laboratories
20 mg6041.363.45View on iHerb →
11
Emerald Laboratories, Coenzymated Prenatal Clinical + Multi, 120 Vegetable Caps
Emerald Laboratories, Coenzymated Prenatal Clinical + Multi, 120 Vegetable Caps
Emerald Laboratories
50 mg3052.163.48View on iHerb →
12
Emerald Laboratories, Women's 45+, Clinical + Multi, 120 Vegetable Caps
Emerald Laboratories, Women's 45+, Clinical + Multi, 120 Vegetable Caps
Emerald Laboratories
50 mg3054.863.66View on iHerb →
13
Emerald Laboratories, Coenzymated Men's 45+ Clinical+ Multi, 120 Vegetable Caps
Emerald Laboratories, Coenzymated Men's 45+ Clinical+ Multi, 120 Vegetable Caps
Emerald Laboratories
50 mg3054.863.66View on iHerb →
14
Emerald Laboratories, Coenzymated Men's 45+ 1-Daily Multi, 30 Vegetable Caps
Emerald Laboratories, Coenzymated Men's 45+ 1-Daily Multi, 30 Vegetable Caps
Emerald Laboratories
20 mg3022.463.74View on iHerb →
15
Emerald Laboratories, Coenzymated Prenatal 1-Daily Multi, 30 Vegetable Caps
Emerald Laboratories, Coenzymated Prenatal 1-Daily Multi, 30 Vegetable Caps
Emerald Laboratories
20 mg3023.363.89View on iHerb →
16
Paradise Herbs, Earth's Blend, One Daily Superfood Multi-Vitamin, No Iron, 30 Vegetarian Capsules
Paradise Herbs, Earth's Blend, One Daily Superfood Multi-Vitamin, No Iron, 30 Vegetarian Capsules
Paradise Herbs
10 mg3011.994.00View on iHerb →
17
Emerald Laboratories, Complete Premium+ Multi, 60 Vegetable Caps
Emerald Laboratories, Complete Premium+ Multi, 60 Vegetable Caps
Emerald Laboratories
25 mg3030.564.07View on iHerb →
18
Paradise Herbs, Earth's Blend, Methyl B-Complex, 60 Vegetarian Capsules
Paradise Herbs, Earth's Blend, Methyl B-Complex, 60 Vegetarian Capsules
Paradise Herbs
10 mg3014.995.00View on iHerb →
19
Secrets of Tea, Vidalocity, Prenatal Vitamin With DHA, 60 Softgels
Secrets of Tea, Vidalocity, Prenatal Vitamin With DHA, 60 Softgels
Secrets of Tea
5 mg6027.009.00View on iHerb →
20
Force Factor, Total Beets®, Pre-Workout, Watermelon, 12.5 oz (354 g)
Force Factor, Total Beets®, Pre-Workout, Watermelon, 12.5 oz (354 g)
Force Factor
10 mg3029.9910.00View on iHerb →
21
Force Factor, Total Beets®, Pre-Workout, Fruit Punch, 12.5 oz (354 g)
Force Factor, Total Beets®, Pre-Workout, Fruit Punch, 12.5 oz (354 g)
Force Factor
10 mg3029.9910.00View on iHerb →
22
Emerald Laboratories, Collagen Health for Men & Women, 90 Vegetable Caps
Emerald Laboratories, Collagen Health for Men & Women, 90 Vegetable Caps
Emerald Laboratories
10 mg3030.5610.19View on iHerb →
23
Mommy's Bliss, Prenatal Multivitamin + Iron, 45 Capsules
Mommy's Bliss, Prenatal Multivitamin + Iron, 45 Capsules
Mommy's Bliss
3 mg4519.9915.87View on iHerb →
24
EVLution Nutrition, ENGN, Pre-Workout Engine, Blue Raz, 11 oz (312 g)
EVLution Nutrition, ENGN, Pre-Workout Engine, Blue Raz, 11 oz (312 g)
EVLution Nutrition
3 mg3015.0118.53View on iHerb →
25
EVLution Nutrition, ENGN Focus, Pre-Workout Engine, Watermelon, 9.52 oz (270 g)
EVLution Nutrition, ENGN Focus, Pre-Workout Engine, Watermelon, 9.52 oz (270 g)
EVLution Nutrition
3 mg3015.9919.74View on iHerb →

How we rank Vitamin B1 (Thiamine Mononitrate)

Two supplements can list the same dose per serving yet cost very differently once you account for how many servings are in the bottle. We calculate the total nutrient in each container (dose per serving × servings per container), divide the current price by that total, and rank by the resulting cost per unit. Lower is better. Because prices are refreshed automatically, this ranking reflects today's iHerb pricing rather than a snapshot from months ago.

Cost per unit is a starting point, not the whole story — the ideal form, third-party testing, and other ingredients matter too. Always check the label and consult a healthcare professional before starting a supplement.

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Prices update automatically and may differ from iHerb at checkout. Rankings are based on cost per unit of the listed nutrient and are for informational purposes only — not medical advice. Links to iHerb are affiliate links.