What are the possible side effects of Imitrex (Sumatriptan)?
Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat. Stop using sumatriptan and call your doctor if you have a serious side effect such as: chest pain or heavy feeling, pain spreading to the arm or shoulder, nausea, sweating, general ill feeling sudden numbness or weakness, especially on one side of the body sudden headache, confusion, problems with vision, speech, or balance fast heart rate, agitation, muscle stiffness, hallucinations, lack of coordination, with nausea, vomiting, or diarrhea sudden and severe stomach pain and bloody diarrhea seizure (convulsions); or numbness or tingling and a pale or blue-colored appearance in your fingers or toes Less serious side effects may include: nausea, vomiting, diarrhea muscle pain warmth or redness under your skin pressure or heavy feeling in any part of your body sneezing, runny nose, congestion, cough burning, numbness, pain or other
