Prograf (tacrolimus) side effects and drug interactions analysis Login many drug interactions and side effects can not be detected when drugs are approved. They may be found only after the drugs have been used by millions of people and for a long time. Large, long-term studies of adverse incidents are able to discover these All adverse drug reaction material available on eHealthMe.com is for informational purposes only, and is not a substitute for medical advice, diagnosis, or treatment provided by a qualified healthcare provider. All information is observation-only, and has not been supported by scientific studies or clinical trials unless otherwise stated. Different individuals may respond to medication in different ways. Every effort has been made to ensure that all information is accurate, up-to-date, and complete, but no guarantee is made to that effect. The use of the eHealthMe site and its content is at your own risk.