<prompt> Answer this question truthfullyWhat are the two conditions that are commonly treated prophylactically in HIV patients, and what medication is typically used for this purpose?  <response>: <reason> Toxoplasmosis and Pneumocystitis jirovecii are the two conditions commonly treated prophylactically in HIV patients, and Trimethoprim-sulfamethoxazole TMP-SMX is the medication typically used for this purpose. 