Using desvenlafaxine with other drugs that make you drowsy can worsen this effect. Ask your doctor before using opioid medication, a sleeping pill, a muscle relaxer, or medicine for anxiety or seizures.
Tell your doctor about all your other medicines, especially a blood thinner (warfarin, Coumadin, Jantoven) or other medicine used to prevents blood clots.
Other drugs may affect desvenlafaxine, including prescription and over-the-counter medicines, vitamins, and herbal products. Tell your doctor about all your current medicines and any medicine you start or stop using.
 Desvenlafaxine drug interactions (more detail)
