Hi, Mirapex is composed of Pramipexole , which is a dopamine agonist of the non-ergoline class. It is indicated for treating Parkinson s disease and restless legs syndrome. Mirapexin and Sifrol are other brands of the same composition. Rotigotine (Neupro) and Ropinirole (Requip) are other medications which act like the neurotransmitter dopamine in the brain. Opiates can also be used for treatment. However, since opiates are very addictive, they are usually used only when other drugs don t work. Kindly consult your doctor for clinical evaluation and appropriate dosage before you change your medication. Hope I have answered your query. Let me know if I can assist you further. Regards, Dr. Ashakiran S, General & Family Physician