Clorazepate is used to treat the symptoms of anxiety, including restlessness, insomnia, and worry; it is also used for convulsions and symptoms associated with acute alcohol withdrawal. It is in a class of drugs known as benzodiazepines.
In a preliminary trial, an extract of periwinkle called vinpocetine was shown to produce minor improvements in short-term memory among people taking flunitrazepam, a benzodiazepine.1 Further study is needed to determine if vinpocetine would be a helpful adjunct to use of benzodiazepines, or clorazepate specifically.
Test tube studies show that L-tryptophan and clorazepate dipotassium interact in the blood in such a way that the actions of the drug may be enhanced when high amounts of L-tryptophan are ingested.2 Controlled research is needed to determine the significance of this interaction and to investigate possible interactions between clorazepate and 5-hydroxytryptophan, a supplement related to L-tryptophan.
1. Bhatti JZ, Hindmarch I. Vinpocetine effects on cognitive impairments produced by flunitrazepam. Int Clin Psychopharmacol 1987;2:325–31.
2. Coassolo P, Briand C, Bourdeaux M, Sari JC. Microcalorimetric method to determine competitive binding. Action of a psychotropic drug (dipotassium clorazepate) on L-tryptophan human serum albumin complex. Biochem Biophys Acta 1978;538:512–20.
Last Review: 11-07-2012
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