Pharmaceutical The leading dopamine agonists, pramipexole (Boehringer Ingelheim's Mirapex/Mirapexin/Sifrol/BI-Sifrol, generics; Mirapex ER/Mirapexin ER/Sifrol Retard/Mirapex LA) and ropinirole (GlaxoSmithKline's Requip, generics; GlaxoSmithKline/SkyePharma's Requip XL/LP/RP/Modutab/Prolib, generics), will continue to garner the most substantial sales among therapies used to treat Parkinson's disease, according to health care advisory firm Decision Resources. 19 August 2012