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': 'All are true about levamisole except - \nSelect and explain. \nA. Acts as an immunostimulator, B. Act as an immunodepressor in high doses, C. Single dose is sufficient for the treatment ofpsoriasis, D. Acts as antihelminthic by causing depolarization', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Single dose is sufficient for the treatment of psoriasis Levamisol o Levamisol is an antihelminthic drug and causes depolarization by stimulating nicotinic receptors. o Levamisol also has immunomodulatory action : i) Immunostimulation at low doses Immunosuppression at high doses o Uses i) Colorectal carcinoma ii) Pediculosis Psoriasis : slow to act and requires two day therapy per week for prolonged period.", 'role': 'assistant'}]