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The long-term use of benzodiazepines may have a similar effect on the brain as alcohol, and is also implicated in depression, anxiety, post-traumatic stress disorder (PTSD), mania, psychosis, sleep disorders, sexual dysfunction, delirium, and neurocognitive disorders.
Benzodiazepines share a similar chemical structure, and their effects in humans are mainly produced by the allosteric modification of a specific kind of neurotransmitter receptor, the GABA A receptor, which increases the overall conductance of these inhibitory channels; this results in the various therapeutic effects as well as adverse effects ...
Flumazenil is a benzodiazepine antagonist and blocks the binding of benzodiazepines to gamma-aminobutyric acid receptors. Similarly to naloxone, flumazenil has a short half-life, and this needs to be taken into account because the patient may exhibit central nervous depression after the antidote has been cleared.
Benzodiazepines typically start working very quickly — their anti-anxiety effects may come on in less than an hour. They work so well (short-term) that many people don’t want to stop taking them.
With chronic benzodiazepine use, tolerance develops rapidly to most of its effects, so that, when benzodiazepines are withdrawn, various neurotransmitter systems go into overdrive due to the lack of inhibitory GABA-ergic activity. Withdrawal symptoms then emerge as a result, and persist until the nervous system physically reverses the adaptions ...
In rare cases, people taking escitalopram may be advised to take a benzodiazepine along with the medication for the first few weeks, as benzodiazepines can help reduce the early adverse effects of ...
A study into the effects of the benzodiazepine receptor antagonist, flumazenil, on benzodiazepine withdrawal symptoms persisting after withdrawal was carried out by Lader and Morton. Study subjects had been benzodiazepine-free for between one month and five years, but all reported persisting withdrawal effects to varying degrees.
Benzodiazepines act as a central nervous system depressant. The relative strength of each of these properties in any given benzodiazepine varies greatly and influences the indications for which it is prescribed. Long-term use can be problematic due to the development of tolerance to the anticonvulsant effects and dependency.