Drinking alcohol after taking headache medication is not recommended, but it is not absolutely contraindicated. Generally, headache may be caused by cold and fever or elevated blood pressure, and some primary headaches, such as migraine, muscle tension pain, and cervical pain. Therefore, it is not recommended to drink alcohol when you have a headache, but it is recommended to drink alcohol and take painkillers to relieve the headache afterwards. For the cause of headache, if you have frequent migraine attacks, you must pay attention to drink less alcohol, because some studies show that alcohol and chocolate are a kind of food that triggers migraine.