Phenobarbitol
Brand names,
Phenobarbitol
Analogs
Phenobarbitol
Brand Names Mixture
Phenobarbitol
Chemical_Formula
C12H12N2O3
Phenobarbitol
RX_link
No information avaliable
Phenobarbitol
fda sheet
Phenobarbitol
msds (material safety sheet)
Phenobarbitol
Synthesis Reference
Hoerlein, U.S. Pat. 1,025,872 (1912)
Phenobarbitol
Molecular Weight
232.235 g/mol
Phenobarbitol
Melting Point
174 oC
Phenobarbitol
H2O Solubility
<0.01 g/100 mL
Phenobarbitol
State
Solid
Phenobarbitol
LogP
1.777
Phenobarbitol
Dosage Forms
Tablet; Elixir
Phenobarbitol
Indication
For the treatment of Epilepsy
Phenobarbitol
Pharmacology
Phenobarbital, the longest-acting barbiturate, is used for its anticonvulsant and sedative-hypnotic properties in the management of all seizure disorders except absence (petit mal).
Phenobarbitol
Absorption
Absorbed in varying degrees following oral, rectal or parenteral administration. The salts are more rapidly absorbed than are the acids. The rate of absorption is increased if the sodium salt is ingested as a dilute solution or taken on an empty stomach
Phenobarbitol
side effects and Toxicity
CNS and respiratory depression which may progress to Cheyne-Stokes respiration, areflexia, constriction of the pupils to a slight degree (though in severe poisoning they may wshow paralytic dilation), oliguria, tachycardia, hypotension, lowered body temperature, and coma. Typical shock syndrome (apnea, circulatory collapse, respiratory arrest, and death) may occur.
Phenobarbitol
Patient Information
PATIENT INFORMATION
Practitioners should give the following information and instructions to patients receiving barbiturates:
1. The use of phenobarbital carries with it an associated risk of psychological and/or physical dependence.
The patient should be warned against increasing the dose of the drug without consulting a physician.
2. Phenobarbital may impair mental and/or physical abilities required for the performance of potentially
hazardous tasks (e.g., driving, operating machinery, etc.).
3. Alcohol should not be consumed while taking phenobarbital. Concurrent use of phenobarbital with other
CNS depressants (e.g., alcohol, narcotics, tranquilizers, and antihistamines) may result in additional CNS
depressant
Phenobarbitol
Organisms Affected
Humans and other mammals