There are no restrictions related to Medical conditions as long as the medication being taken are yours, issued in a prescription in your name, taken as prescribed on the bottle, do not cause conditions which could be defined as unfit for duty (i.e., sleep inducing, memory loss, loss of physical capacities, and etc.), been reported on medical forms provided by the employer at time of hire, no criminal history for prescription or non-prescription drug abuse within the last 5 years (proor of rehilitation), or prescription gotten from a non-approved pharmacy (i.e., Mexico and Canada bus trips and etc.). One thing to know is that even though there are states out there currently who allow the use of marijuana for personal or medical use, it does not apply to people working in or wishing to work in the nuclear industry, its still a no no. This may or may not answer your question entirely but on this web there are a lot of knowledgeable people on this subject.