I can't find any studies or reports regarding smoking
If the heat does not alter the medication, it will be absorbed into your blood stream quicker than orally and potentially cause muscle relaxation, including lung muscles (stopping breathing). There are other ingredients in the tablet that would also be inhaled, and their effect would be unknown.
...Do you have a follow-up question? Consult Dr. Eitner, a Family Physician with 28 years in practice: