If it is absorbed well through that way, it might cause dangerous rise in bp.(potential for stroke, MI...Plus it’s other side effects could exacerbate high blood sugars, decrease urine flow with prostatic hypertrophy.
Knowing the drug cultures unending search for a cheap high...those methods might already be being used...( Grind up the tabs and inhale it). Or inject it...very dangerous.
I had a boss in 1993 who amused me with his medication dilemma. He said, "I can breathe or I can pee". Tough choice.