Headache Powder contains three main ingredients: acetaminophen, aspirin, and caffeine. Acetaminophen and aspirin are non-steroidal anti-inflammatory drugs, the main role of the antipyretic and anti-inflammatory effect, mainly used for toothache, joint pain, headache, fever and so on. The main role of caffeine is to improve the spasm of blood vessels, which can play a role in relieving the efficacy of headache, the three components of the joint application of headache can play a role in relieving the role of the drug can not be applied for a long time. Acetaminophen and aspirin have an irritating effect on the gastric mucosa, long-term application may cause gastric bleeding, and may cause liver and kidney function damage. Long-term application of caffeine has an addictive effect, headache symptoms, it is best to go to the hospital for further examination to confirm the diagnosis, to find out the causes of headache treatment.