Despite the name, this product delivers just 25 mg of **Magnesium** per serving — only 25% of the minimum clinical supplemental dose (100–400 mg). Worse, it uses magnesium oxide, a form your body absorbs at roughly 4%, meaning very little of that 25 mg actually reaches your cells. If you're supplementing magnesium for sleep, stress, or muscle support, this falls well short of what the research says you need.

**Vitamin B6** fares better at 25 mg, landing right at the low end of the studied supplemental range. B6 helps your body absorb magnesium more effectively, and the pairing is clinically recognized — but that synergy only matters when the magnesium dose is meaningful. The B6 here uses pyridoxine, which your liver must convert to the active form (P5P) before your body can use it.

The core problem is simple: you'd need to take 4–16 servings (12–48 tablets) daily to reach an effective magnesium dose, which isn't practical. At the labeled 3-tablet serving, this product is significantly underdosed for its headline ingredient.

BioStacks
Solgar

Magnesium with Vitamin B6

3 Tablets · 33 servings · $0.25/serving

iHerbAmazon

Best for

Energy

Ingredients (2)

Vitamin B6

100%

Dose

25 mg

Target

1.3–25 mg

Form

Budget

Magnesium

25 mg

Trace amount — not scored

Other Ingredients (6)

Silicon DioxideAnti-caking

Fine silica powder used to prevent clumping

Magnesium StearateLubricant

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

Carnauba WaxCoating

Hard plant wax from the carnauba palm used to glaze gummies and tablets

Microcrystalline CelluloseBinder

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

Microcrystalline CelluloseBinder

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

GlycerinHumectant

Sweet-tasting liquid used in soft capsules and liquids

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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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