ACE inhibitors (e.g., enalapril), ARBs (e.g., losartan), aliskiren, potassium supplements/salt substitutes, other potassium-sparing diuretics (amiloride, triamterene), NSAIDs (ibuprofen, diclofenac), lithium, digoxin, trimethoprim/cotrimoxazole, heparin/LMWH