For the 30 millionth time there is no DOT/FMCSA list. The lists seen circulating the net are ones specific companies will not allow.
A driver can take any prescription medication out there if the following is met:
It is prescribed to the driver
The driver takes it as prescribed
The doctor who prescribes the medication understands what the driver does and firmly believes that the medication will not pose any kind of safety issues. (When it comes time for a physical the examining doctor needs to also concur)
If all the above are not met the driver may be ineligible to drive while taking the medication.
If you have any question about whether or not a specific medication is allowed by your company then talk to your safety department.