I didn't read the doc's link, but as someone who has had to dive on meds, if I wish to dive at all, I would recommend that we remember that every person reacts differently to different meds.
I hurt my back in Sept. '05, slipping a bunch of discs and pinching three nerves. I tried diving on the pain meds, but soon realized I couldn't do so safely. SO, I had to not dive until I no longer needed pain meds (the longest 7 months in my life). I still use two prescription meds three times daily. When I started diving again, after my doc said ok to giving it a try, I did shallow dives with buddies that know me, to help me monitor if I could do the dive without freaking out or something bad happening.
So, continueing with my recommendation, if you, or anyone, is going to dive on ANY type of prescription drug, you should get a doctor's approval, then take it slow, to see how you, individually, react.