I have been using Fioricet for about 20yrs. and it has worked wonderful for me. Several months ago my headaches started to increase and I went into medication overuse getting rebound headaches everyday. I have not taken Fioricet for 12weeks and have used Sumatriptan in an emergency but I really don’t like the side effects. Can I go back to using Fioricet without issues with rebound headaches. I could not get an appointment with a specialist until the middle of January.