BioStacks
Nutricost

Magtein Magnesium L-Threonate

3 Capsules · 40 servings · $1.12/serving

iHerbAmazon

Best for

Heart

Ingredients (2)

Magtein

100%

Dose

2000 mg

Target

100–400 mg

Form

Premium

Magnesium

100%

Dose

144 mg

Target

100–400 mg

Form

Not listed

Other Ingredients (4)

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

HypromelloseCapsule

Plant-derived capsule material from cellulose

Microcrystalline CelluloseBinder

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

How to Take It

Best taken in the evening

Magnesium L-threonate is designed to raise magnesium in the brain — shown in animals. The human cognition trial dosed 1.5–2 g/day, usually split with a dose in the evening.

With or without food
Space it a couple of hours from Iron and Calcium

On the label

Take 3 capsules daily, take 1 capsule in the morning and 2 capsules 30 minutes before bedtime.

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

Price Check

$44.95

$10$20$50

Pricier than 92% of 579 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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