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Magnesium
On a summer day in 1618, a farmer in Epsom, England led his cows to a spring. They refused to drink—too bitter. But when he splashed the water on a rash, it...
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Vitamin B6 (pyridoxine; active form: pyridoxal-5′-phosphate, PLP)
You swallow a tiny tablet to quiet the nausea that's been shadowing your mornings—and it works. Weeks later, a different person, also chasing wellness, notices...
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Iron
In 19th-century clinics, pale teenagers were diagnosed with "green sickness," a languor so common it earned its own pills—iron salts that often turned the...
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Comparison
Comparison Promising evidence
Magnesium glycinate (magnesium bisglycinate) vs Magnesium citrate
If you want daily magnesium without looser stools, choose glycinate. If you need constipation relief or don't mind a mild laxative effect, choose citrate....
Magnesium Bisglycinate

