Once Parkinson’s disease is diagnosed, medications are inseparable, and there are many medications available for Parkinson’s disease, each playing a different role to effectively control Parkinson’s disease symptoms, allowing patients to take care of themselves and improve their quality of life. But in life, not all patients are able to do scientific and reasonable treatment. Many patients have problems with irregular medication, and there are also those who avoid taking medication, adding or subtracting medication, stopping medication, changing medication, and failing to follow up in a timely manner. In addition, the effect of drugs is related to diet, individual differences, other drug interactions or conflicts, etc. Therefore, we have compiled the dosage and onset of action of commonly used Parkinson’s disease drugs for you to understand, and to achieve scientific and reasonable treatment.