Is 390 mg of caffeine a lot?
Is 390 mg of caffeine a lot? Up to 400 milligrams (mg) of caffeine a day seems safe for most adults. Most adults can consume about 400 milligrams of caffeine per day without negative effects, the Food and Drug Administration (FDA) writes.Extremely high daily intakes of 1,000 mg or more per day have been reported […]
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