You're getting 240mg of **Magnesium** per two-capsule serving in the glycinate form — one of the best-absorbed forms available and the one most studied for sleep and relaxation support. That 240mg lands squarely in the middle of the 100–400mg clinical range, so you're covered for a meaningful daily dose without needing to stack extra capsules.

The glycinate form is specifically favored because it's gentle on your stomach compared to oxide or citrate, and glycine itself has calming properties that complement magnesium's role in muscle relaxation and sleep quality. With 60 servings per bottle, you're looking at a two-month supply at the recommended dose.

At 240mg, you're getting a solid maintenance dose, but if you're targeting the higher end of the clinical range for sleep support (closer to 400mg), you'd need to take an extra capsule daily — which cuts the bottle's duration to about 40 days.

BioStacks
Nature's Bounty

Magnesium Glycinate, High Absorption, 120 Capsules (120 mg per Capsule)

2 Capsules · 60 servings · $0.52/serving

iHerbAmazon

Best for

Sleep

Ingredients (1)

Magnesium

100%

Dose

240 mg

Target

100–400 mg

Form

Premium

Other Ingredients (2)

Ascorbyl PalmitateAntioxidant

Fat-soluble form of vitamin C used as preservative

Microcrystalline CelluloseBinder

Plant-derived cellulose used as a binder and filler in 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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