<prompt> Pulmonary fibrosis is the most common complication after treatment with -6- mercaptopurineVincristineBleomycinAdriamycine  <response>: Ans. is c i.e., Bleomycin Drugs causing pulmonary fibrosis Acyclovir Busulphan Cyclophosphamide Gold Mitomycin C Amiodarone Carmustine Nitrofurantoin Melphalan Sulfonamides Bleomycin Chlorambucil Procarbazine Methysergide Penicillamine Methotrexate 