A standard 65 mg iron tablet already exceeds the NIH's adult limit, and federal law requires an overdose warning on every bottle. Here's what the evidence shows.
minerals
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Potassium for Nerve and Muscle Health: The 99 mg FDA Limit Explained
Every OTC potassium tablet caps at 99 mg because of a 1975 FDA rule, not nutrition science. Here's what the NIH says adults need, and who's really at risk. -
Magnesium Inadequacy Is Common: What the NIH Data Actually Show
NIH survey data show 48% of Americans get less magnesium than they need. Here's what the research actually supports for blood pressure, migraine, and bone health.