L-DOPA, or levodopa, is a medication commonly used to treat Parkinson's disease. It works by increasing the levels of dopamine, a neurotransmitter that is often deficient in individuals with this condition. By converting into dopamine in the brain, L-DOPA helps improve movement and coordination. L-DOPA is usually taken in combination with other medications to enhance its effectiveness and reduce side effects. While it can significantly improve symptoms, its effectiveness may diminish over time, and patients may experience fluctuations in their response to the treatment. Regular monitoring by a healthcare professional is essential for optimal management.