PRECAUTIONS: Before taking sumatriptan, tell your doctor or pharmacist if you are allergic to it; or to other "triptan" migraine drugs; or if you have any other allergies. Before using this medication, tell your doctor or pharmacist if you have risk factors for heart disease including: high cholesterol level, high blood pressure, diabetes, smoking history, family history of heart disease or stroke, obesity. Caution is also recommended in women after menopause or after removal of the ovaries, and men over 40 years old because of an increased risk for undiagnosed heart disease. Before using this medication, tell your doctor or pharmacist your medical history, especially of: certain blood circulation disorders (e.g., Raynaud's syndrome), a heart condition, stroke, chest pain, kidney disease, liver problems, seizures. There have been rare reports of those with sulfa drug allergies having allergic reactions to sumatriptan. Consult your doctor or pharmacist. Because this medication may cause dizziness and drowsiness, use caution engaging in activities requiring alertness. The manufacturer does not recommend use of sumatriptan in the elderly, because they may be more sensitive to its side effects. This medication should be used only when clearly needed if you are pregnant or trying to become pregnant. Discuss the risks and benefits with your doctor. This medication appears in breast milk. Consult your doctor about breast-feeding.

DRUG INTERACTIONS: Certain medications taken with this product could result in serious, even fatal, drug interactions. Do not take MAO inhibitors (e.g., furazolidone, linezolid, phenelzine, procarbazine, selegiline, tranylcypromine) for at least 2 weeks before or after taking this drug. Do not take other "triptan" migraine drugs (e.g., zolmitriptan, rizatriptan) or ergot-type drugs (e.g., dihydroergotamine, ergotamine, methysergide) within 24 hours of taking this medicine. Before using this medication, tell your doctor or pharmacist of all nonprescription and prescription products you may use, especially of: other drugs for prevention or treatment of headaches, "serotonin-type" medications (e.g., SSRI antidepressants such as fluvoxamine, sertraline), medication for weight control. It is recommended to avoid consumption of alcohol while taking this medication. Do not start or stop any medicine without doctor or pharmacist approval.