Head-to-head comparisons of medication uses, side effects, warnings, and more.
Key takeaways
Ropinirole (generic, formerly branded as Requip) and pramipexole (generic, branded as Mirapex ER) are both dopamine agonists used to treat Parkinson's disease (PD) and moderate-to-severe restless legs syndrome (RLS). Both medications are available in immediate-release and extended-release forms. Ropinirole's immediate-release tablets are typically taken three times daily for PD and once daily for RLS, and pramipexole's immediate-release tablets are also taken three times daily for PD as well as once daily for RLS. The extended-release versions of both medications are taken once daily. Common side effects for both include nausea, sleepiness, and dizziness, but pramipexole can also cause constipation and swelling in the arms or legs. Both medications can lead to compulsive behaviors and hallucinations, but pramipexole has a rare risk of severe muscle damage called rhabdomyolysis. Neither medication should be stopped abruptly due to the risk of withdrawal symptoms.
Ropinirole
Pramipexole
Ropinirole
Pramipexole
Summary of Requip vs. Mirapex
Summary for Dopamine agonist
Prescription only
Ropinirole is a dopamine agonist that's used to treat Parkinson's disease (PD) and restless legs syndrome (RLS) in adults. For Parkinson's disease, the immediate-release tablets are taken by mouth three times per day, and the extended-release tablets are taken once per day. Ropinirole side effects include nausea, sleepiness, and dizziness.
Summary for Dopamine agonist
Prescription only
Pramipexole is used to treat Parkinson's disease (PD) and restless legs syndrome (RLS). The dosage depends on what form you’re taking: the immediate-release tablet is taken 3 times per day and the extended-release tablet is taken once per day. The immediate-release is only available as a lower-cost generic (the brand name Mirapex has been discontinued in the US). The extended-release version of this medication is available as brand (Mirapex ER) and generic. Side effects include nausea, drowsiness, dizziness, and tiredness.