BioStacks
Source Naturals

High Potency B-1 500 mg

1 Tablet · 100 servings · $0.18/serving

iHerbAmazon

Best for

Energy

Ingredients (2)

Magnesium Complex

100%

Dose

100 mg

Target

100–400 mg

Form

Standard

Thiamine

100%

Dose

500 mg

Target

25–100 mg

Form

Not listed

Other Ingredients (6)

Magnesium StearateLubricant

A salt of stearic acid used as a lubricant in tablet and capsule production

Silicon DioxideAnti-caking

Fine silica powder used to prevent clumping

Gum AcaciaBinder

Natural plant gum (acacia) used as a binder, stabilizer, and emulsifier in foods and supplements

Hydroxypropyl CelluloseBinder

An inert modified-cellulose polymer used as a binder, film-former, and disintegrant.

Microcrystalline CelluloseBinder

Plant-derived cellulose used as a binder and filler in supplements

Stearic AcidLubricant

Saturated fatty acid used as tablet lubricant

How to Take It

Best taken in the evening

The Magnesium in it is what pulls this toward the evening. Vitamin B1 is easier on the stomach taken with food.

With food
Space it a couple of hours from Iron and Calcium

On the label

1 tablet daily.

General guidance based on the ingredients, not a substitute for the label or your doctor.

Price Check

$17.89

$10$20$50

Cheaper than 67% of 574 magnesium supplements

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Sources & Scoring

Nutrient data (RDA, UL, and safety thresholds) sourced from: NIH Office of Dietary Supplements and National Academies Dietary Reference Intakes (DRI).

This is not medical advice. Consult a healthcare provider before making changes to your supplement routine.

The score analyzes what's on the label: ingredient doses vs. clinical ranges, chemical forms, evidence levels, and known interactions. It does not verify label accuracy or test for contaminants — for that, look for third-party certifications like USP or NSF.

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