Hello. Thank you for visiting our store, we buy things in a licensed pharmacy in the European Union. Alka-Seltzer is a pain reliever and antipyretic used to relieve pain symptoms of the head, teeth, neck, menstrual cycle, muscles and joints, back pain and mild arthritis pain. Alka-Seltzer is also used to reduce pain in case of fever and common cold. Compound Active ingredients: 1 effervescent tablet contains 324 mg of acetylsalicylic acid. Usage Always use Alka-Seltzer as directed by your doctor. If you have any questions, ask your doctor or pharmacist. Unless directed by your doctor, you may use Alka-Seltzer as directed below. Adults and adolescents over 16 years of age: 1-3 effervescent tablets at a time, repeated every 4-8 hours. Do not take more than 12 effervescent tablets per day. Before use, dissolve the tablet in a glass of water. Do not take Alka-Seltzer on an empty stomach. Alka-Seltzer is taken after meals. If you have already used more Alka-Seltzer than recommended, do not exceed the indicated dose. The first signs of an overdose are nausea, vomiting, dizziness, tinnitus, blurred vision and hearing. Symptoms indicating serious intoxication are clouding of consciousness, trembling, shortness of breath and fever. Without consulting a doctor, Alka-Seltzer should not be used for more than 3-5 days.