Nausea and vomiting are common side effects when first beginning therapy with<unk> ; antiemetics such as trimethobenzamide or domperidone, dopamine antagonists, are often used while first starting<unk> . Around 50% of people grow tolerant enough to<unk> 's emetic effects that they can discontinue the antiemetic. Other side effects include orthostatic hypotension and resultant fainting, sleepiness, dizziness, runny nose, sweating, paleness, and flushing. More serious side effects include dyskinesias (especially when taking L-DOPA), fluid accumulation in the limbs (edema), suddenly falling asleep, confusion and hallucinations, increased heart rate and heart palpitations, and persistent erections (priapism). The priapism is caused by<unk>  increasing arterial blood supply to the penis. This side effect has been exploited in studies attempting to treat erectile dysfunction.
Apomorphine
Desomorphine
Tripelennamine
Droperidol
Tropisetron
Amfepramone
Benzatropine
Bremazocine