Imitrex
Sumatriptan is used to treat vascular headaches such as migraine and cluster headaches. Sumatriptan will not prevent migraines or cluster headaches or reduce the number of attacks. It will only treat a migraine or cluster headache that is already occurring.
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Direction
Take each tablet whole with a full glass of water. Do not split the tablets. If your symptoms go away, but then return, you can take an additional oral dose with an interval of at least 2 hours between doses, up to a maximum of 200 mg in 24 hours, unless otherwise directed by your doctor. Do not take more than is recommended by your doctor.
Side Effect
If you experience any of the following serious side effects, stop using sumatriptan and seek emergency medical attention: an allergic reaction (difficulty breathing; closing of the throat; swelling of the lips, tongue, or face; or hives); severe or prolonged chest pain or an irregular heartbeat; chest, jaw, or neck pain or tightness; sudden or severe stomach pain; problems seeing; or unusual weakness or numbness. Other, less serious side effects may be more likely to occur. Continue to use sumatriptan and talk to your doctor if you experience nausea; drowsiness or dizziness; tingling, flushing, warmth, redness, or heaviness of a body part; unpleasant taste in the mouth (nasal spray); nasal irritation (nasal spray); or injection site discomfort (injection). Side effects other than those listed here may also occur. Talk to your doctor about any side effect that seems unusual or that is especially bothersome.
Precaution
Do not take this medication without first talking to your doctor if you have heart disease including angina (chest pain), history of a heart attack, or high blood pressure. Serious, even fatal, side effects involving the heart have been reported with sumatriptan and other similar medicines. Before taking sumatriptan, tell your doctor if you have risk factors for heart disease such as high blood pressure, a family history of heart disease, high cholesterol (a type of fat in the blood), are overweight, have diabetes, smoke cigarettes, are postmenopausal, or are a male over 40 years of age; have circulation problems such as Raynaud's syndrome; liver disease; kidney disease; or seizures or epilepsy. You may not be able to take sumatriptan, or you may require a dosage adjustment or special monitoring during treatment if you have any of the conditions listed above Sumatriptan is in the FDA pregnancy category C. This means that it is not known whether sumatriptan will be harmful to an unborn baby. Do not use this medication without first talking to your doctor if you are pregnant or could become pregnant during treatment. Sumatriptan passes into breast milk and may affect a nursing infant. Do not use sumatriptan without first talking to your doctor if you are breast-feeding a baby. Sumatriptan may cause dizziness or drowsiness. Use caution when driving, operating machinery, or performing other hazardous activities until you can evaluate the effects of the medication.