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|Butabarbital Sodium |
Drugs search, click the first letter of a drug name: | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | 1 | 2 | 3 | 4 | 5 | 6 | 8 | 9 Home Butabarbital SodiumPronouncation: (byoo-tah-BAR-bih-tahl SO-dee-uhm)Class: Sedative and hypnotic, Barbiturate Trade Names: Mechanism of ActionPharmacologyDepresses sensory cortex, decreases motor activity, alters cerebellar function, and produces drowsiness, sedation, and hypnosis. PharmacokineticsAbsorptionAbsorption is increased if taken on an empty stomach. DistributionRapidly distributed to all tissues and fluids with high concentration in the brain, liver, and kidneys. Bound to plasma and tissue proteins. MetabolismMetabolized by liver. EliminationExcreted in urine; plasma t ½ is 100 h. Onset¾ to 1 h. Duration6 to 8 h. Indications and UsageShort-term use (2 wk) as a sedative or hypnotic. ContraindicationsHypersensitivity to barbiturates; history of manifest or latent porphyria. Dosage and AdministrationHypnoticAdults PO 50 to 100 mg at bedtime. SedativeAdults PO Daytime sedative: 15 to 30 mg, 3 or 4 times daily. Preoperative sedative: 50 to 100 mg, 60 to 90 min before surgery. ChildrenPO Preoperative sedative: 2 to 6 mg/kg (max, 100 mg). Storage/StabilityStore tablets and elixir at controlled room temperature (68° to 77°F). Drug InteractionsAlcohol, CNS depressantsCNS depressant effects may be enhanced. Anticoagulants (eg, warfarin), beta-blockers (eg, metoprolol), corticosteroids, doxycycline, felodipine, griseofulvin, methadone, metronidazole, nifedipine, quinidine, theophyllines, verapamilActivity of these drugs may be reduced by butabarbital. AnticonvulsantsSerum levels of carbamazepine, valproic acid, and succinimides may be reduced. Valproic acid may increase butabarbital levels. Estrogens, estrogen-containing oral contraceptivesMay reduce contraceptive effectiveness. MAOIsThe effects of butabarbital may be prolonged. MethoxyfluraneRisk of renal toxicity may be increased. PhenytoinMay increase butabarbital levels while phenytoin levels may increase or decrease. Laboratory Test InteractionsDecreased serum bilirubin; false-positive phentolamine test results; decreased response to metyrapone. Adverse ReactionsCardiovascularBradycardia, hypotension, syncope (less than 1%). CNSSomnolence (1% to 3%); agitation, confusion, hyperkinesia, ataxia, CNS depression, nightmares, nervousness, psychiatric disturbance, hallucinations, insomnia, anxiety, dizziness, abnormal thinking, headache (less then 1%). GINausea, vomiting, constipation (less than 1%). HepaticLiver damage (less than 1%). RespiratoryHypoventilation, apnea (less than 1%). MiscellaneousHypersensitivity (angioedema, skin rashes, exfoliative dermatitis), fever (less than 1%). Precautions
PregnancyCategory D . LactationExcreted in breast milk. ChildrenMay respond with excitement rather than depression. ElderlyUse with caution because of the greater frequency of decreased hepatic, renal, or cardiac function, and concomitant diseases or other drug therapy. May react to barbiturates with marked excitement, depression, and confusion. Renal FunctionUse with caution and in reduced dosage. Hepatic FunctionUse with caution and in reduced dosage. Special Risk PatientsUse with caution in patients with a history of drug abuse, who are mentally depressed, or who have suicidal tendencies. Acute or chronic painBecause paradoxical excitement may be induced, use with caution. DependenceMay be habit forming; tolerance or psychological and physical dependence may occur with continued use. DiscontinuationIf treatment needs to be discontinued, attempt to gradually taper the dose over at least a 1-wk interval in patient who has been on prolonged therapy. Monitor patient for withdrawal symptoms (eg, increased anxiety, tremor, muscle or abdominal cramps, sweating). If significant withdrawal symptoms develop, reinstitute previous dosing schedule and attempt a less rapid tapering regimen after patient has stabilized. OverdosageSymptomsUnsteady gait, slurred speech, sustained nystagmus, CNS and respiratory depression, Cheyne-Stokes respiration, areflexia, constriction of pupils, oliguria, tachycardia, hypotension, lowered body temperature, coma, shock syndrome (apnea, circulatory collapse, respiratory arrest, and death may occur), pneumonia, pulmonary edema, cardiac arrhythmia, CHF, renal failure, death. Patient Information
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