Used to treat
anxiety, panic, and seizure disorders
Cheap
Clonazepamis an anticonvulsant
primarily used in the treatment of seizure disorders. Clonazepam is a member of a class of drug known as benzodiazepines.
This drug may also be used as an antianxiety,
for the short-term relief of anxiety.
Clonazepam may also be used to treat
Touette's Syndrome, panic disorder, drug-induced mania, to help
resistant depression, nocturnal myoclonus, relieve trigeminal neuralgia,
bipolar affective disorder.
Also to help control certain types of petit mal, atypical, akinetic,
myoclonic, or absence seizures.
Klonopin, a benzodiazepine, is available as scored tablets with
a K-shaped perforation containing 0.5 mg, 1 mg or 2 mg clonazepam,
and unscored tablets with a K-shaped perforation containing 1 mg
or 2 mg of clonazepam. Each tablet also contains lactose, magnesium
stearate, microcrystalline cellulose and corn starch, with the following
colorants: 0.5 mg: FD&C yellow no. 6 lake; 1 mg:
FD&C blue no. 1 lake and FD&C blue No. 2 lake.
Chemically, clonazepam is 5-(o-Chlorophenyl)-1,3-dihydro-7-nitro-
2 H-1,4-benzodiazepin-2-one. It is a light yellow crystalline
powder. It has a molecular weight of 315.72. The molecular formula
is C 15 H 10 ClN 3 O 3
The precise mechanism by which clonazepam exerts its antiseizure
effects is unknown, although it is believed to be related to its
ability to enhance the activity of gamma aminobutyric acid (GABA),
the major inhibitory neurotransmitter in the central nervous system.
Convulsions produced in rodents by pentylenetetrazol or, to a lesser
extent, electrical stimulation are antagonized, as are convulsions
produced by photic stimulation in susceptible baboons. A taming
effect in aggressive primates, muscle weakness and hypnosis are
also produced. In humans, clonazepam is capable of suppressing the
spike and wave discharge in absence seizures (petit mal) and decreasing
the frequency, amplitude, duration, and spread of discharge in minor
motor seizures.
Clonazepam is rapidly and completely
absorbed after oral administration. The absolute bioavailability
of clonazepam is about 90%. Maximum plasma concentrations of clonazepam
are reached within 1 to 4 hours after oral administration. Cheap
clonazepam is approximately 85% bound to plasma proteins. Clonazepam
is highly metabolized, with less than 2% unchanged clonazepam being
excreted in the urine. Biotransformation occurs mainly by reduction
of the 7-nitro group to the 4-amino derivative. This derivative
can be acetylated, hydroxylated, and glucuronidated. Cytochrome
P-450, including CYP3A, may play an important role in clonazepam
reduction and oxidation. The elimination half-life of clonazepam
is typically 30 to 40 hours. Clonazepam
pharmacokinetics are dose-independent throughout the dosing range.
There is no evidence that cheap clonazepam induces its own metabolism
or that of other drugs in humans.
Contraindications
Significant liver disease, narrow angle glaucoma, sensitivity to
benzodiazepines