"Researchers may have uncovered a mechanism behind nitrate-based triggers in migraine. They found that compared with people who don't experience migraines, those who do have significantly more nitrate, nitrite, and nitric oxide reductase genes in "...
Symptoms include vomiting, numbness, tingling, pain and cyanosis of the extremities associated with diminished or absent peripheral pulses; hypertension or hypotension; drowsiness, stupor, coma, convulsions and shock. A case has been reported of reversible bilateral papillitis with ring scotomata in a patient who received five times the recommended daily adult dose over a period of 14 days. Treatment consists of removal of the offending drug. Maintenance of adequate pulmonary ventilation, correction of hypotension, and control of convulsions and blood pressure are important considerations. Treatment of peripheral vasospasm should consist of warmth, but not heat, and protection of the ischemic limbs. Vasodilators may be beneficial but caution must be exercised to avoid aggravating an already existent hypotension.
Coadministration of ergotamine with potent CYP 3A4 inhibitors (ritonavir, nelfinavir, indinavir, erythromycin, clorithromycin and troleandomycin) has been associated with acute ergot toxicity (ergotism) characterized by vasospasm and ischemia of the extremities (See PRECAUTIONS: DRUG INTERACTIONS), with some cases resulting in amputation. There have been rare reports of cerebral ischemia in patients on protease inhibitor therapy when ergotamine was coadministered, at least one resulting in death. Because of the increased risk for ergotism and other serious vasospastic adverse events, ergotamine use is contraindicated with these drugs and other potent inhibitors of CYP 3A4 (e.g., ketoconazole, itraconazole) (See WARNINGS: CYP 3A4 Inhibitors).
Ergomar (ergotamine tartrate tablets) ® Sublingual Tablets may cause fetal harm when administered to pregnant women. Ergomar (ergotamine tartrate tablets) ® Sublingual Tablets are contraindicated in women who are or may become pregnant. If this drug is used during pregnancy or if the patient becomes pregnant while taking this product, the patient should be apprised of the potential hazard to the fetus. Peripheral vascular disease, coronary heart disease, hypertension, impaired hepatic or renal function and sepsis.
Hypersensitivity to any of the components.This monograph has been modified to include the generic and brand name in many instances.
Last reviewed on RxList: 1/20/2009
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