Others include increased sensitivity to sunlight, which increases your chances of sunburn and skin cancer. Some of them can affect your nervous system and some can affect your digestive system. That is why the medications and their effects are studied by the recipients. Understanding the medications helps you to use them properly and appreciate their importance to your survival. Their importance and their bad side effects are why the doctors try to find the correct dosage for each person.
Every person is a little different in how they react to the different drugs.
Some are more effective in one person than another. The goal is to find a dosage that controls the immune system enough to prevent rejection but is not so high that the side effects are too harmful. Some times this goes quickly, sometimes it doesn't. The dosage must be changed. As more and more years of successful transplants accumulate, more and more knowledge about how to control and adjust the medications and their effects is learned and can be used to make the process quicker and easier in the future, Research is developing better medications to help with this too.