BioStacks
Dr. Mercola

Magnesium L-Threonate

3 Capsules · 90 servings · $0.94/serving

iHerbAmazon

Best for

Sleep

Ingredients (2)

Magnesium L-Threonate

100%

Dose

2000 mg

Target

100–400 mg

Form

Premium

Magnesium

100%

Dose

145 mg

Target

100–400 mg

Form

Premium

Other Ingredients (4)

Ascorbyl PalmitateAntioxidant

Fat-soluble form of vitamin C used as preservative

Capsule ShellCapsule

Generic capsule shell where the label does not specify the material. Common materials are hypromellose (HPMC) for vegetarian capsules and gelatin for traditional capsules — both are GRAS-listed and safe. Fish gelatin and pullulan variants also exist.

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

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

Adults, as a dietary supplement, take three (3) capsules daily. Two (2) mid-day and one (1) at night, 2 hours before bed.

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

Price Check

$84.97

$10$20$50

Pricier than 99% 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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