Before you start treatment with Ongentys, tell your doctor:, About all the prescription and over-the-counter medications you take, including vitamins and herbal supplements., About your allergies., About your health conditions., If you are pregnant or planning to become pregnant. Ongentys may cause harm to an unborn baby., If you are breastfeeding or planning to breastfeed. It has not been determined whether or not Ongentys is transmitted through breast milk., You should avoid treatment with Ongentys if you have end-stage kidney disease., Ongentys can cause a rapid heart rate, arrhythmias, and blood pressure changes. Seek care right away if you experience any of these effects., Ongentys can cause you to feel sleepy or fall asleep, even during the daytime or during normal activities. You should not drive or operate machinery until you know how Ongentys affects you., Ongentys can cause low blood pressure. Your blood pressure should be monitored during treatment with Ongentys., Ongentys can cause or worsen dyskinesia, or sudden involuntary movements. Tell your doctor right away if this occurs., Ongentys can cause hallucinations or psychosis. Tell your doctor right away if these occur., Ongentys can cause impulsive behaviors or intense and uncontrollable urges to gamble, spend money, binge eat, and/or other urges. Tell your doctor right away if you experience these behaviors or urges., A sudden withdrawal or dose decrease can cause withdrawal-emergent hyperpyrexia and confusion with symptoms that may include a fever, stiff muscles, altered mental status, and autonomic instability. Ongentys should be slowly tapered or gradually withdrawn. About all the prescription and over-the-counter medications you take, including vitamins and herbal supplements., About your allergies., About your health conditions., If you are pregnant or planning to become pregnant. Ongentys may cause harm to an unborn baby., If you are breastfeeding or planning to breastfeed. It has not been determined whether or not Ongentys is transmitted through breast milk.