Are there any medicines you should avoid if you have donated a kidney?

NSAIDS. Sold over-the-counter, and used commonly for pain control, the group of medications called nsaids- non steroidal anti inflammatory drugs include aspirin, Naproxen and Ibuprofen (motrin or advil). They can be quite harmful to kidney function, which is why the label instructions must always be followed. Routine, daily use is probably unwise for anyone. Donors should generally avoid these drugs.
Yes. Yes . You should avoid nsaids ( Ibuprofen , etc) or any other nephrotoxic medications.
Yes. There are a number of classes of drugs that are nephrotoxic (can injure kidneys). You should discuss this issue with your doctors before you take any new chronic medication.
Yes. Certain medications are processed by the kidney and may cause injury if not monitored. You should discuss all your medications, prescription and over-the-counter with your physician.