Why isn’t fioricet a controlled substance?

Fioricet contains tylenol, caffeine, butalbital. Its sister drug, Fiorinal is schedule III. The only difference is fioricet contains tylenol as a component while fiorinal instead has aspirin. This is not a valid reason for the unscheduling of fioricet. Both contain the same habit forming drug, butalbital. Can someone please explain.

Comments are closed.