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Fioricet and Esgic is made from a combination of butalbital (a barbiturate, 50 mg), acetaminophen (325 mg), and caffeine (40 mg). They are indicated for the treatment of tension headaches and muscle contraction headaches. Although not indicated, they are commonly used to treat migraines and other pain related ailments. Note that Fioricet (and some other pain medications) are implicated as causing repeat headaches with over-use.
Fioricet is indicated for the treatment of complex and muscle contraction headaches. It is also commonly prescribed for migraines although it is not FDA indicated for this use. The usual adult dose is 1-2 tablets every 4 hours as needed, not exceeding six tablets in a 24 hour period.
Butalbital has generalized depressant effect on central nervous system and, in very high doses, has peripheral effects. Acetaminophen has analgesic and antipyretic effects; its analgesic effects may be mediated through inhibition of prostaglandin synthetase enzyme complex. Caffeine is thought to produce constriction of cerebral blood vessels.
Butalbital has a half-life of about 35 hours. Acetaminophen has a half-life of about 1.25 to 3 hours, but may be increased by liver damage and after an overdose. Caffeine has a half-life of about 3 hours.
* Dizziness
* Drowsiness
* Intoxicated feeling
* Light-headedness
* Nausea
* Vomiting
* Sedation
* Substance dependence
* Shortness of breath
* Abdominal ache
Phrenilin is an equivalent combination of butalbital and acetaminophen, without the caffeine (325/50). Esgic Plus and Phrenilin Forte contains 500 and 650 miligrams of acetaminophen respectively, instead of 325 milligrams. Additionally, Esgic Plus contains 40 milligrams of caffeine. Fiorinal contains aspirin instead of acetaminophen. Fiorinal and Fioricet also come as combination drugs with codeine called Fiorinal with Codeine and Fioricet with Codeine, respectively, which add 30 milligrams of codeine phosphate to each mixture.
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