Drug interactions may change how your medications work or increase your risk for serious side effects. This document does not contain all possible drug interactions. Keep a list of all the products you use (including prescription/nonprescription drugs and herbal products) and share it with your doctor and pharmacist. Do not start, stop, or change the dosage of any medicines without your doctor's approval.

Avoid taking certain medications that can affect the removal of eletriptan from your body within 72 hours of taking eletriptan. Examples include cobicistat, nefazodone, ribociclib, ritonavir, azole antifungals (such as ketoconazole, itraconazole), macrolide antibiotics (such as clarithromycin, erythromycin), HIV protease inhibitors (such as nelfinavir), among others.

If you also take any ergotamine medication (such as dihydroergotamine) or other "triptan" drugs (such as sumatriptan, rizatriptan), separate your eletriptan dose at least 24 hours apart from your dose of these other medications to lessen the chance of serious side effects.

The risk of serotonin syndrome/toxicity increases if you are also taking other drugs that increase serotonin. Examples include street drugs such as MDMA/"ecstasy," St. John's wort, certain antidepressants (including SSRIs such as fluoxetine/paroxetine, SNRIs such as duloxetine/venlafaxine), among others. The risk of serotonin syndrome/toxicity may be more likely when you start or increase the dose of these drugs.