Imitrex, Sumatriptan, known as in the general form, a drug used to relieve pain and headaches. Sumatriptan may pharmaceutical company Glaxo Smith Kline and markets Imitrex, but other manufacturers use different names for the drug. Sumatriptan stop migraine headaches by reducing inflammation in blood vessels in the brain. Imitrex injection does not cure or prevent migraine headaches, but may provide relief for those who suffer from migraine headaches from the use of liquid headaches.The Imitrex does not involve injecting drugs into a vein or muscle. Instead, people are injected under the skin. If desired, one can buy the liquid form of Imitrex in itself, but drug manufacturers also sell in groups of pre-prepared. Some groups include a single injection of use and the appropriate dose of Sumatriptan, while others offer pre-filled syringes.There are a variety of side effects relating to Imitrex injection. Side effects most often related to feelings of general dissatisfaction, but the Imitrex injection may cause severe reactions in some people. These injections have been associated with heart problems, including irregular heartbeat and cardiac arrest. In addition, some people suffered from mild to severe allergic reactions after receiving injections injection.The Imitrex is a relatively effective way to stop the migraines. Some people also use a drug to treat cluster headaches, a rare form of nervous disease that cause tremendous pain. Although sumatriptan may reduce the symptoms, not cure and no effective treatment for cluster headache. Those who suffer from cluster headaches in some cases, the use of Imitrex injection simply because they take effect more quickly than many oral medications.