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Clonazepam is benzodiazepine derivative that is useful alone or as an adjunct in the treatment of the Lennix-Gastaut syndrome (petit mal variant), akinetic and myoclonic seizures. Clonazepam has been shown to be effective in patients with absence seizures (petit mal) who have failed to respond to succinimide therapy. In some studies, up to 30% of patients have shown a loss of anticonvulsant activity, often within 3 months of administration. In some cases, dosage adjustment may reestablish efficiency.
Clonazepam is a long-acting benzodiazepine restricted in use to those patients who have responded for seizure control only to diazepam, but who no longer respond to diazepam within non-toxic levels. It is an effective anticonvulsant, but used only as a last resort due to its side effects.
No significant cautionary statements
Therapeutic concentration: 20-60 ng/mL
Toxic concentration: >100 ng/mL