"Jan. 15, 2013 -- Women who have migraine with aura may have a higher risk of heart attacks, and they may face a higher risk of dangerous blood clots if they use certain hormonal contraceptives.
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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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