Supplement ingredients
Plain-English profiles of the ingredients in your supplements, skincare and food.
Magnesium
What to take with magnesium: pairings, conflicts and timing
Most supplements sit comfortably beside magnesium. A few compete with it at high doses, and a handful of medications need hours of separation.
Ingredients A–Z
Latest in Supplement ingredients
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Magnesium
Magnesium dosage and timing: what trials used and when to take it
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Magnesium
Magnesium explained: what it does, who needs it, what works
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Fish oil
Fish oil safety: side effects, interactions and who should skip it
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Creatine
Creatine safety: side effects, interactions and who should skip it
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Berberine
Berberine safety: side effects, interactions and who should avoid it
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Zinc
Zinc safety: side effects, interactions and who should avoid it
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Fish oil
Fish oil benefits: what human trials found, condition by condition
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Creatine
Creatine benefits, ranked by how strong the evidence is
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Berberine
Berberine benefits: what the human trials actually show
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Zinc
Zinc benefits: what the human trials found, condition by condition
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Fish oil
Fish oil explained: what it is, how it works and who it's for
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Creatine
Creatine: what it does, who it's for, and what the evidence shows