What should be the age of a kidney donor?

The donor's age should be between 18 years, which is the legal age and 65 years, a perfectly fit 65. In exceptional circumstances, you can have slightly older donors, provided they are absolutely fit, but very old donors may not be able to take such a major surgery and it is not fair to them. The donor does not require any medication except immediately after operation depending on the Nephrologist's fancy. The cost after transplant depends on the drug combinations your Nephrologist chooses, so you must ask him.