
Daily magnesium supplementation with a trace amount of potassium support.. The magnesium component is well-dosed and uses a premium, extended-release form. However, the potassium dose is negligible due to regulatory limits, making it ineffective for meaningful potassium supplementation. This significant weakness pulls the overall score down per the hero product rule.
Magnesium at 250mg with extended-release technology (ZumXR) is 63% of optimal 400mg but above minimum effective. The extended release is smart for magnesium absorption. Potassium at 99mg hits the FDA-mandated supplement limit. The magnesium is the real star here, and it delivers well.

Verified Supplement Facts
Every dose checked against clinical research
We analyzed the actual supplement facts panel for this product. Every ingredient dose below was cross-referenced with published clinical trials to determine if it matches what studies actually use.
Source: Official product page
vegetable cellulose (capsule), ethylcellulose, microcrystalline cellulose, medium chain triglycerides, stearic acid, rice concentrate, hypromellose, oleic acid, silica
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