Question for a pharmacist?

butalbital is barbiturate and a schedule III controlled substance (CS), however, Esgic and Fioricet (without codeine) are not scheduled. Why is this?

Even considering the tiny amount of butalbital in the compound, when you look at things such as Tylenol #3 or Fioricet beside codeine, they are automatically controlled because of the codeine. Why isn't the regular Esgic or Fioricet? Usually, any medication with a CS ingredient is automatically a CS, or is that just with narcotics?
Answers:
When the butalbital is a minor amount and it is combined next to other medications, the potential for abuse is lessened. Butalbital may also have a lower misuse potential itself than codeine. Source(s): PharmD candidate

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