<prompt> All of the following can precipitate porphyria, except-SteroidsGriseofulvinEstrogenPenicillin  <response>: Ans. is d i.e., Penicillin Penicillin is a safe drug in acute intermittent porphyria Drugs precipitating acute intermittent porphvria o Barbiturates o Griseolalvin o Chlorpropramide o Rifampicin o Phenytoin o Sulfonamides o Oral contraceptives o Estrogen 