Pirfenidone related photosensitivity – Prevent sun burns this summer

Pirfenidone (Esbriet or Pirfenex) is one of the few medications that effectively treats and slows down the progression of idiopathic pulmonary fibrosis (IPF). While this medication is generally well tolerated, pirfenidone, like many other drugs, can increase the chance of a condition called photosensitivity. Photosensitivity means the skin is more sensitive to sun lights. People with photosensitivity can get sun burns more easily than usual and even have allergic skin reactions to sun light. We have had many patients after buying pirfenidone from our Canadian pharmacy service who called us with a skin rash thinking they were having an allergic reaction to pirfenidone, but in fact they were having photosensitivity and the skin rashes were results of unprotected exposure to sun lights. Continue reading