I think you will be fine as long as you have a valid prescription. I have a close trucking owner operator buddy who takes Adipex and has taken is for the last 4 years. He has passed every drug screen whether it be for his randoms or contract work.
Yea I have a valid prescription so not worried there. I've read conflicting things that it can cause issues and not. Basically can't throw a false positive but once there do the secondary test and see its not actually meth all is well lol