Term: porfimer sodium Pronunciation: (POR-fih-mer SOH-dee-um) May 24, 2024October 7, 2025 Description: A drug used to treat some types of cancer. When absorbed by cancer cells and exposed to light, porfimer sodium becomes active and kills the cancer cells. It is a type of photodynamic therapy agent. Also called Photofrin. Related Posts:DEFITELIO® (Defibrotide Sodium)FRAGMIN® (Dalteparin sodium)PEDMARK® (Sodium thiosulfate)