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Migraine headache is commonly treated with triptans (serotonin-receptor agonists), but, because these agents are associated with side effects (such as chest discomfort, dizziness, and throat tightness), they are poorly tolerated by some patients and contraindicated in those with cardiovascular disease. Telcagepant is a new calcitonin gene-related peptide antagonist that lacks the vasoconstrictor effects of triptans. In a randomized, controlled, double-blind, parallel-treatment trial funded by the maker of telcagepant, 1380 adult patients (mean age, 42; 85% female) with acute migraine received one of four oral treatments: telcagepant (160 mg or 300 mg), zolmitriptan (5 mg), or placebo. The study was conducted at 81 outpatient primary care an…