REQUIP XL is a prescription medication primarily used to treat symptoms of Parkinson's disease, such as stiffness, tremors, muscle spasms, and poor muscle control. It is also prescribed for the treatment of Restless Legs Syndrome (RLS). The active ingredient in REQUIP XL is ropinirole, which belongs to a class of drugs known as dopamine agonists. These medications work by mimicking the action of dopamine, a natural substance in the brain that helps control movement and coordination. REQUIP XL is formulated as an extended-release tablet, designed to release the medication slowly over time, allowing for once-daily dosing. It is important to follow the prescribing doctor's instructions closely when taking REQUIP XL, as the dosage may need to be adjusted based on the patient's response to treatment and the presence of side effects.