How Much Caffeine Is Enough to Make You Jittery? The Complete Guide
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4 min read
According to the U.S. Food and Drug Administration (FDA), most healthy adults can safely consume up to 400mg of caffeine per day. However, that number doesn't tell the full story, as many people find that a much smaller amount is enough to make you jittery, experiencing unwanted side effects like restlessness and anxiety. Your personal sensitivity is key.