Drug Detail:Pentobarbital (injection) (Pentobarbital (injection) [ pen-toe-bar-bi-tal ])
Drug Class: Barbiturates
Usual Adult Dose for Insomnia
IM: 150 to 200 mg IM ONCE
IV:
- Initial dose: 100 mg via IV injection ONCE
- Maintenance dose: 100 to 500 mg via IV Injection
- Note: The maintenance dose includes the initial dose; additional doses (if needed) should be given in increments after at least 1 minute following the initial dose.
- Maximum dose: 500 mg/day
Comments:
- After administration of a hypnotic IM injection dose, vital signs should be monitored.
- The IV injection rate should not exceed 50 mg/min.
- At least 1 minute should elapse between doses to determine the full effect of IV treatment; additional small increments of the drug may be given (up to a total dose of 200 to 500 mg).
- The initial IV dose was predicted for patients weighing 70 kg.
- When treating insomnia, this drug typically loses effectiveness for sleep induction and maintenance after 2 weeks.
Uses:
- Anticonvulsant at anesthetic doses in the emergency control of certain acute convulsive episodes (e.g., associated with cholera, eclampsia, meningitis, status epilepticus, tetanus, topic reactions to local anesthetic or strychnine)
- Preanesthetic
- Sedative
- Short-term treatment of insomnia (as a hypnotic)
Usual Adult Dose for Sedation
IM: 150 to 200 mg IM ONCE
IV:
- Initial dose: 100 mg via IV injection ONCE
- Maintenance dose: 100 to 500 mg via IV Injection
- Note: The maintenance dose includes the initial dose; additional doses (if needed) should be given in increments after at least 1 minute following the initial dose.
- Maximum dose: 500 mg/day
Comments:
- After administration of a hypnotic IM injection dose, vital signs should be monitored.
- The IV injection rate should not exceed 50 mg/min.
- At least 1 minute should elapse between doses to determine the full effect of IV treatment; additional small increments of the drug may be given (up to a total dose of 200 to 500 mg).
- The initial IV dose was predicted for patients weighing 70 kg.
- When treating insomnia, this drug typically loses effectiveness for sleep induction and maintenance after 2 weeks.
Uses:
- Anticonvulsant at anesthetic doses in the emergency control of certain acute convulsive episodes (e.g., associated with cholera, eclampsia, meningitis, status epilepticus, tetanus, topic reactions to local anesthetic or strychnine)
- Preanesthetic
- Sedative
- Short-term treatment of insomnia (as a hypnotic)
Usual Adult Dose for Status Epilepticus
IM: 150 to 200 mg IM ONCE
IV:
- Initial dose: 100 mg via IV injection ONCE
- Maintenance dose: 100 to 500 mg via IV Injection
- Note: The maintenance dose includes the initial dose; additional doses (if needed) should be given in increments after at least 1 minute following the initial dose.
- Maximum dose: 500 mg/day
Comments:
- After administration of a hypnotic IM injection dose, vital signs should be monitored.
- The IV injection rate should not exceed 50 mg/min.
- At least 1 minute should elapse between doses to determine the full effect of IV treatment; additional small increments of the drug may be given (up to a total dose of 200 to 500 mg).
- The initial IV dose was predicted for patients weighing 70 kg.
- When treating insomnia, this drug typically loses effectiveness for sleep induction and maintenance after 2 weeks.
Uses:
- Anticonvulsant at anesthetic doses in the emergency control of certain acute convulsive episodes (e.g., associated with cholera, eclampsia, meningitis, status epilepticus, tetanus, topic reactions to local anesthetic or strychnine)
- Preanesthetic
- Sedative
- Short-term treatment of insomnia (as a hypnotic)
Usual Pediatric Dose for Insomnia
Adequate, well-controlled studies have not been performed in pediatric patients; published case reports and other studies in pediatric patients supports safety and efficacy. Manufacturer suggested dosing:
IM: 2 to 6 mg/kg IM ONCE
- Maximum dose: 100 mg
Comments:
- After administration of a hypnotic IM injection dose, vital signs should be monitored.
- An initial IV dose of 100 mg via IV injection ONCE was predicted for patients weighing 70 kg.
- When treating insomnia, this drug typically loses effectiveness for sleep induction and maintenance after 2 weeks.
Uses:
- Anticonvulsant at anesthetic doses in the emergency control of certain acute convulsive episodes (e.g., associated with cholera, eclampsia, meningitis, status epilepticus, tetanus, topic reactions to local anesthetic or strychnine)
- Preanesthetic
- Sedative
- Short-term treatment of insomnia (as a hypnotic)
Usual Pediatric Dose for Sedation
Adequate, well-controlled studies have not been performed in pediatric patients; published case reports and other studies in pediatric patients supports safety and efficacy. Manufacturer suggested dosing:
IM: 2 to 6 mg/kg IM ONCE
- Maximum dose: 100 mg
Comments:
- After administration of a hypnotic IM injection dose, vital signs should be monitored.
- An initial IV dose of 100 mg via IV injection ONCE was predicted for patients weighing 70 kg.
- When treating insomnia, this drug typically loses effectiveness for sleep induction and maintenance after 2 weeks.
Uses:
- Anticonvulsant at anesthetic doses in the emergency control of certain acute convulsive episodes (e.g., associated with cholera, eclampsia, meningitis, status epilepticus, tetanus, topic reactions to local anesthetic or strychnine)
- Preanesthetic
- Sedative
- Short-term treatment of insomnia (as a hypnotic)
Usual Pediatric Dose for Status Epilepticus
Adequate, well-controlled studies have not been performed in pediatric patients; published case reports and other studies in pediatric patients supports safety and efficacy. Manufacturer suggested dosing:
IM: 2 to 6 mg/kg IM ONCE
- Maximum dose: 100 mg
Comments:
- After administration of a hypnotic IM injection dose, vital signs should be monitored.
- An initial IV dose of 100 mg via IV injection ONCE was predicted for patients weighing 70 kg.
- When treating insomnia, this drug typically loses effectiveness for sleep induction and maintenance after 2 weeks.
Uses:
- Anticonvulsant at anesthetic doses in the emergency control of certain acute convulsive episodes (e.g., associated with cholera, eclampsia, meningitis, status epilepticus, tetanus, topic reactions to local anesthetic or strychnine)
- Preanesthetic
- Sedative
- Short-term treatment of insomnia (as a hypnotic)
Renal Dose Adjustments
Dose adjustment(s) may be required; however, no specific guidelines have been suggested. Caution recommended.
Liver Dose Adjustments
Dose adjustment(s) may be required; however, no specific guidelines have been suggested. Caution recommended.
Dose Adjustments
Patients who are elderly and/or debilitated: The dose should be reduced because these patients may be more sensitive to barbiturates.
Withdrawal regimens: Cautious and gradual withdrawal of this drug should be performed over an extended period. The manufacturer product information should be consulted regarding recommendations for specific dosing regimens.
Precautions
CONTRAINDICATIONS:
- Hypersensitivity to the active component, known barbiturate sensitivity, or to any of the ingredients
- Patients with a history of latent/manifest porphyria
Safety and efficacy of this drug have not been established in pediatric patients.
Consult WARNINGS section for additional precautions.
US Controlled Substance: Schedule II
Dialysis
Data not available
Other Comments
Administration advice:
- Parenteral administration should be reserved for situations where oral formulations would be impossible or impractical.
- Patients receiving IV injections should be closely monitored, and resuscitation and artificial ventilation equipment should be available.
IV compatibility:
- IV solutions should not be admixed with other drugs or solutions.
General:
- This drug should be given under the direction of a healthcare provider.
- Dosing should consider the patient's age, status, and weight.
Monitoring:
- CARDIOVASCULAR: Blood pressure and cardiac function, especially in patients receiving IV injections
- HEMATOLOGIC: Periodic blood counts, especially in patients on long-term treatment
- HEPATIC: Periodic liver function tests, especially in patients on long-term treatment
- RENAL: Periodic renal function tests (e.g., respiration rate), especially in patients on long-term treatment and in those receiving IV injections
Patient advice:
- This medicine may increase the risk of suicidal thoughts and behavior. Patients should be alert
- This drug may cause drowsiness, dizziness, and reduced alertness. Patients should not drive a car or operate dangerous machinery until they know how this drug affects them.
- Patients should avoid drinking alcohol or taking other drugs that may cause sleepiness or dizziness while taking this drug until they talk to their healthcare provider.
- Patients should be told to contact their healthcare provider before increasing/decreasing the dose or discontinuing treatment.
- Advise patients to speak to their healthcare provider if they become pregnant, intend to become pregnant, or are breastfeeding.