Intravenous Dihydroergotamine for the Treatment of Refractory Migraines

As a effect of its biological process through CYP3A4, DHE may be topic to drug interactions resulting from suppression of these enzymes.
Clarithromycin, erythromycin, and troleandomycin, as well as protease inhibitors (e.g., indinavir, nelfinavir, and ritonavir), and azole antifungals such as ketoconazole and itraconazole may impair the organic process of DHE, resulting in increased serum concentrations and a greater risk for definite quantity.
Less potent CYP3A4 inhibitors, such as clotrimazole, fluconazole, fluoxetine, fluvoxamine, citrus foodstuff, nefazodone, saquinavir, and zileuton, should be used with warning.

Because of their potentially additive effects, DHE should not be administered with peripheral or central vasoconstrictors, beta blocking agents, or nicotine.
In improver, it is recommended that DHE not be administered within 24 work time of sumatriptan or other plant disease compounds, to avoid an additive risk for coronary arteria vasospasm.
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