This is a very good questions, as we know, Fiorinal contains: 325 mg of aspirin (ASA), 50 mg of butalbital, and 40 mg of caffeine.
Fiorinal is scheduled because drug abusers can easily perform an “acid wash” to remove the aspirin (acetylsalicylic acid) component. It is much more difficult to remove the acetaminophen component in Fioricet.
Fioricet contains: 325 mg of acetaminophen (APAP), 50 mg of butalbital, and 40 mg of caffeine. The max dose of acetaminophen per day is 4000 mg, and since there’s only 325 mg in Fioricet, you’ll have to take a lot at once or take them for a long time to get the damage from acetaminophen, whereas someone on warfarin takes aspirin and isn’t aware of it the effects could be immediate….The fatal liver damage from acetaminophen comes when you take it with alcohol, so if you don’t take your Fioricet with a shot you should be ok at this dose.
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