This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pharmacology
[{'content': 'all the following drugs are renal toxic except ? \nSelect and explain. \nA. tetracycline, B. tigecycline, C. minocycline, D. doxycycline', 'role': 'user'}, {'content': 'Answer: B \nExplanation: TIGECYCLINE : Its a glycycline compound similar to tetracycline uses : plague,mycoplasma,ricketessia,borellia, vrsa it is resistent to efflux excreated by bile so reno safe drug ref : kd tripathi 8th ed', 'role': 'assistant'}]