BioStacks
Metagenics

MagActive Magnesium Muscle Powder

Powder · 5 G · 30 servings · $0.97/serving

iHerbAmazon

Best for

Heart

Ingredients (11)

Potassium

100%

Dose

99 mg

Target

99–500 mg

Form

—

Magnesium

100%

Dose

210 mg

Target

100–400 mg

Form

Not listed

Niacin

40%

Dose

10 mg

Target

25–500 mg

Form

Standard

Malic acid

83%

Dose

500 mg

Target

600–2400 mg

Form

—

Thiamin

8%

Dose

2 mg

Target

25–100 mg

Form

Budget

Other Ingredients (3)

Natural FlavorsFlavor

Broad regulatory category of flavor constituents derived from natural sources. Composition is proprietary and not disclosed — 'Natural Flavors' can include several hundred different compounds depending on the target flavor profile, including hexane-extracted constituents and proprietary carrier solvents. 'Natural' is a regulatory definition (21 CFR §101.22), not a safety guarantee.

Stevia ExtractSweetener

Zero-calorie natural sweetener extracted from the leaves of Stevia rebaudiana

Citric AcidAcidulant

Natural acid derived from citrus fruits

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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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