"Most of us get headaches from time to time. Some are mild. Others cause throbbing pain. They can last for minutes or days. There are many different types of headaches. How you treat yours depends on which kind you have.
No gross overdoses in clinical practice have been reported. Coronary vasospasm was observed after intravenous administration of IMITREX Injection [see CONTRAINDICATIONS]. Overdoses would be expected from animal data (dogs at 0.1 g/kg, rats at 2 g/kg) to possibly cause convulsions, tremor, inactivity, erythema of the extremities, reduced respiratory rate, cyanosis, ataxia, mydriasis, injection site reactions (desquamation, hair loss, and scab formation), and paralysis.
The elimination half-life of sumatriptan is about 2 hours [see CLINICAL PHARMACOLOGY], and therefore monitoring of patients after overdose with IMITREX Injection should continue for at least 10 hours or while symptoms or signs persist.
IMITREX Injection is contraindicated in patients with:
- Ischemic coronary artery disease (CAD) (angina pectoris, history of myocardial infarction, or documented silent ischemia) or coronary artery vasospasm, including Prinzmetal's angina [see WARNINGS AND PRECAUTIONS].
- Wolff-Parkinson-White syndrome or arrhythmias associated with other cardiac accessory conduction pathway disorders [see WARNINGS AND PRECAUTIONS].
- History of stroke or transient ischemic attack (TIA) because these patients are at a higher risk of stroke [see WARNINGS AND PRECAUTIONS].
- History of hemiplegic or basilar migraine.
- Peripheral vascular disease [see WARNINGS AND PRECAUTIONS].
- Ischemic bowel disease [see WARNINGS AND PRECAUTIONS].
- Uncontrolled hypertension [see WARNINGS AND PRECAUTIONS].
- Recent (i.e., within 24 hours) use of ergotamine-containing medication, ergot-type medication (such as dihydroergotamine or methysergide), or another 5-hydroxytryptaminei (5-HT1) agonist [see DRUG INTERACTIONS].
- Concurrent administration of an MAO-A inhibitor or recent (within 2 weeks) use of an MAO-A inhibitor [see DRUG INTERACTIONS and CLINICAL PHARMACOLOGY].
- Known hypersensitivity to sumatriptan [see WARNINGS AND PRECAUTIONS and ADVERSE REACTIONS].
- Severe hepatic impairment [see CLINICAL PHARMACOLOGY].
Last reviewed on RxList: 10/15/2012
This monograph has been modified to include the generic and brand name in many instances.
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