This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pharmacology
[{'content': 'Which one of the following drug is used in the treatment of Toxoplasmosis? \nSelect and explain. \nA. Aensenuate, B. Ciprofloxacin, C. Thiacetazone, D. Pyrimethamine', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Pyrimethamine is a folate analogue that competitively inhibits parasite dihydrofolate reductase. Along with sulfonamides, at high doses pyrimethamine is effective in the treatment of Toxoplasma gondii infections in immunocompromised patients, such as HIV-positive individuals. It is commonly used as an antimalarial drug for both treatment and prevention of malaria. Ref: Essentials of Medical Pharmacology, 5th Edition, Page 745; Principles of Pharmacology: The Pathophysiologic Basis of Drug Therapy By David E. Golan, Page 638', 'role': 'assistant'}]