Amiodarone and Curcumin
As indicated here, amiodarone, prescribed to decrease heart rhythm irregularities, has been associated with the development of lung scarring, or pulmonary fibrosis.
Curcumin, derived from the spice Turmeric, has been found to have protective effects against amiodarone-induced pulmonary fibrosis in rats.
Link to much more on curcumin, including sources.
As always, check with your doctor before taking herbs, over-the-counter medications, etc.