way too paranoid. relax, you'll be fine with the tylenol bottle. it's not customs, they're just looking for terrorists. maybe if it was int'l flight, not locally.
Domestic flight = no one cares what pills you bring on the plane. If it makes you feel better put them in an advil bottle and cover it with advil and cotton.
No they do a cavity search for Anavar, I had a buddy whos sisters brothers cousins uncle got caught and was sent to jail for 5 years for 3 tabs of Var.