The barbiturates are nonselective central nervous system depressants which
are primarily used as sedative hypnotics and also anticonvulsants in subhypnotic
doses. The barbiturates and their sodium salts are subject to control under
the Federal Controlled Substances Act (See "Drug
Abuse and Dependence" section).
The sodium salts of amobarbital, pentobarbital, phenobarbital, and secobarbital are available as sterile parenteral solutions.
Barbiturates are substituted pyrimidine derivatives in which the basic structure common to these drugs is barbituric acid, a substance which has no central nervous system (CNS) activity. CNS activity is obtained by substituting alkyl, alkenyl, or aryl groups on the pyrimidine ring.
NEMBUTAL Sodium Solution (pentobarbital sodium injection) is a sterile solution for intravenous or intramuscular injection. Each mL contains pentobarbital sodium 50 mg, in a vehicle of propylene glycol, 40%, alcohol, 10% and water for injection, to volume. The pH is adjusted to approximately 9.5 with hydrochloric acid and/or sodium hydroxide.
NEMBUTAL (pentobarbital) Sodium is a short-acting barbiturate, chemically designated as sodium 5-ethyl-5-(1-methylbutyl) barbiturate. The structural formula for pentobarbital sodium is:
The sodium salt occurs as a white, slightly bitter powder which is freely soluble in water and alcohol but practically insoluble in benzene and ether.
What are the possible side effects of pentobarbital (Nembutal Sodium)?
Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.
Call your doctor at once if you have a serious side effect such as:
- confusion, hallucinations;
- weak or shallow breathing;
- slow heart rate, weak pulse; or
- feeling like you might pass out.
Less serious side effects may include:
- problems with memory or concentration;
- excitement, irritability, or aggression (especially in children or older...
Read All Potential Side Effects and See Pictures of Nembutal »
Last reviewed on RxList: 7/2/2008
This monograph has been modified to include the generic and brand name in many instances.