Fioricet works for many people, and if used moderately, then that can be
good for you.

What you need to be aware of however, is that chronic use of caffeine, can
cause rebounding headaches in some people. And secondly, the butalbital in
it can induce certain liver enzymes to degrade other drugs you may be
taking faster. Butalbital is also habit forming, and a small number of
people who use it can become habituated to it.

The trend today is to not use barbiturates very much. Phenobarbital for example has been found to lower IQ in children (who used to be prescribed for childhood seizures). Also long term constant use can lower the seizure threshold over time. And all barbiturates affect the metabolism of other drugs you might need or be taking.

But for occasional use for people whose headaches are not high in frequency, it can be very effective. If you discover this effectiveness wearing off, then that is a warning sign, you are using it too much. Some doctors won't prescribe Fioricet for these reasons.