“The most frequent symptom associated with caffeine withdrawal is moderate to severe headache. This can occur between 12 and 24 hours after last intake of caffeine. It usually lasts for one to two days, though some may have a headache for longer. If you are purposefully attempting to stop consuming caffeine, be certain to check labels on pain medications. Some medications combine caffeine with acetaminophen and aspirin, since caffeine is an effective pain reliever.
Others experiencing caffeine withdrawal may feel depressed and some feel sleepy. Some people may experience significant mood instability, which may be helped by prescribed medications. People may also have difficulty concentrating. Some undergoing caffeine withdrawal can have flu-like symptoms that include nausea or vomiting, and muscle pain or stiffness.
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