Cymbalta is used to treat major depressive disorder and general anxiety disorder. It is also used to treat a chronic pain disorder called fibromyalgia, and to treat pain caused by nerve damage in people with diabetes (diabetic neuropathy).
Caffeine-withdrawal headaches can last up to 48 hours and can be as intense as a migraine headache. Withdrawal symptoms can begin 12 to 24 hours after the last cup of coffee and can last up to 1 week. These symptoms can include lethargy, extreme nervousness, irritability, sweating, headaches and shakiness.
Be ready for withdrawal symptoms. Depending on how much caffeine you drank, your body might be at risk of getting a shock with the change from daily caffeine to no caffeine. The following caffeine withdrawal symptoms are possible and can last for a few days after you have stopped caffeine: