6. Don’t take nonsteroidal anti-inflammatory drugs (NSAIDS). Some very common over-the-counter (OTC) drugs, including ibuprofen and naproxen, can cause kidney dysfunction.
7. Skip on antihistamines and antacids. Other common OTC drugs sometimes affect other drugs or change absorption, so you should discuss possible alternatives with your doctor.
8. Avoid certain vitamins and herbal supplements. St. Johns’ wort, schisandra, and some herbal teas and other natural supplements interact with transplant medications. Using them can put you at risk, Dr. Fatica says. It’s always a good idea to ask your doctor about known interactions before taking any herbal product or OTC drugs. Check with your doctor about any other restrictions for your specific case or stage of disease.