Dosing & Uses
With acetaminophen: Fioricet
With ASA: Fiorinal
Other Indications & Uses
Pain, vascular HA
<12 years: Safety and efficacy not established
Serious - Use Alternative
Significant - Monitor Closely
Frequency Not Defined
- Intoxicated feeling
- Headache, shaky feeling, tingling, agitation, fainting, fatigue, fever, heavy eyelids, high energy, hot spells, numbness, sluggishness, seizure
- Dry mouth, hyperhidrosis
- Difficulty swallowing, heartburn, flatulence, constipation
- Leg pain, muscle fatigue
- Pruritus, earache, nasal congestion, tinnitus, euphoria, allergic reactions
Hypersensitivity to any component, porphyria
Patient should avoid driving car, heavy machinery
Pregnancy & Lactation
Pregnancy Category: C
Lactation: excreted in breast milk
A:Generally acceptable. Controlled studies in pregnant women show no evidence of fetal risk.
B:May be acceptable. Either animal studies show no risk but human studies not available or animal studies showed minor risks and human studies done and showed no risk.
C:Use with caution if benefits outweigh risks. Animal studies show risk and human studies not available or neither animal nor human studies done.
D:Use in LIFE-THREATENING emergencies when no safer drug available. Positive evidence of human fetal risk.
X:Do not use in pregnancy. Risks involved outweigh potential benefits. Safer alternatives exist.
NA:Information not available.
Half-Life: 35 hr
Excretion: renal (Butalbital)
Mechanism of Action
Butalbital: intermediate-acting barbiturate