Medobar is the trade name and the generic name is Dobasic Hydrazide Tablets. The black color of a patient’s urine after taking Dobazepine Tablets is usually associated with an adverse reaction to the drug itself. It may also be caused by hemolytic disease. Indications for the use of Dobasic Hydrazide Tablets include primary Parkinson’s disease, post-encephalitis Parkinson’s syndrome, and symptomatic Parkinson’s syndrome (carbon monoxide or manganese poisoning). Patients taking this medication may experience changes in their urine, which is usually light red in color and darkens on standing, so it may appear black. Other common adverse reactions include allergic reactions, glaucoma, liver and kidney impairment. Dobazepine tablets are contraindicated in severe psychiatric disorders, severe cardiac arrhythmias, heart failure, glaucoma, peptic ulcers, and a history of convulsions. Urine color change may also be seen in a variety of other diseases, such as hemolytic disease, etc. It is recommended to consult a doctor to identify the cause. Dobasic hydrazide tablets should be taken under the guidance of a medical professional, and the occurrence of symptoms of discomfort, please consult a doctor.