Caffeine causes central nervous system stimulation by arresting the phosphodiesterase, which in turn increases the accumulation of c-AMP (cyclic adenosine 3’5′-monophosphate.) Fioricet may decrease the effectiveness of oral anticoagulants, corticosteroids, estrogens, griseofulvin (an anti-fungal drug), doxycycline, theophyllines, quinidine, and beta-adrenergic blockers. The toxic effects of a general anesthetic, methoxyflurane might be heightened by Fioricet. The potential for hepatotoxicity increases if Fioricet is utilized in conjunction with hydantoins or sulfinpyrazone. Fioricet might be more toxic if used with alcohol and various CNS depressants.

If you are someone who has a sensitivity to any part of Fioricet, then Fioricet might be wrong for you. Fioricet should be used with caution if you have increased intracranial pressure, any head injury, severe liver or kidney impairment, Addison’s disease, hypothyroidism, and prostatic hypertrophy or urethral stricture.

Side effects of using Fioricet may be dizziness, drowsiness, and lightheadedness. Because Fioricet makes people lightheaded, be careful when operating machines or when you are participating in activities that you need to be mentally alert for, like driving. While using Fioricet, don’t drink any type of alcohol. You can eat food or drink milk if you feel sick to your stomach. Put Fioricet away in a cool, dry place, out of sunlight and away from kids. You should be aware that Fioricet is very addictive, and so should just be used under careful supervision. Use Fiorcet just for the time it is prescribed, in the suggested dosage, and don’t take it more often than prescribed.

When used the right way, your tension headaches and migraines should feel better. If you think Fioricet isn’t working like it should, discuss it with your doctor so that he can prescribe something else for you.