Dosage form: oral solution
Drug classes:Barbiturate anticonvulsants, Barbiturates
Medically reviewed by Drugs.com. Last updated on Aug 1, 2021.
Disclaimer: This drug has not been found by FDA to be safe and effective, and this labeling has not been approved by FDA. Read further information about unapproved drugs.
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Phenobarbital Oral Solution Description
The barbiturates are nonselective central nervous system (CNS) depressants that are primarily used as sedative-hypnotics. In subhypnotic doses, they are also used as anticonvulsants. The barbiturates and their sodium salts are subject to control under the Federal Controlled Substances Act.
Phenobarbital is a barbituric acid derivative and occurs as white, odorless, small crystals or crystalline powder that is very slightly soluble in water; soluble in alcohol, in ether, and in solutions of fixed alkali hydroxides and carbonates; sparingly soluble in chloroform. Phenobarbital is 5-ethyl-5-phenylbarbituric acid and has the empirical formula C12H12N2O3. Its molecular weight is 232.24. It has the following structural formula:
Phenobarbital is a substituted pyrimid...
