Pramipexole dihydrochloride is primarily used in the treatment of Parkinson's disease. It works by stimulating dopamine receptors in the brain, helping to alleviate symptoms such as tremors, stiffness, and slow movement. This medication is often prescribed when other treatments are not effective or to complement existing therapies.

Additionally, it is used to manage restless legs syndrome (RLS), a condition characterized by uncomfortable sensations in the legs and an irresistible urge to move them. By acting on the dopamine system, it helps reduce the symptoms, particularly during periods of rest or sleep.

The drug is typically administered orally in tablet form, with dosage adjusted based on the patient's response and tolerance. Regular monitoring by a healthcare provider is essential to ensure optimal effectiveness and minimize potential side effects.