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[citation needed] For example, the equivalent dose of diazepam in an elderly individual on lorazepam may be half of what would be expected in a younger individual. [7] [8] Equivalent doses of benzodiazepines differ as much as 20 fold. [9] [10] [11]
The most common side-effects of benzodiazepines are related to their sedating and muscle-relaxing action. They include drowsiness , dizziness, and decreased alertness and concentration. Lack of coordination may result in falls and injuries particularly in the elderly.
Sedation is the side effect people taking lorazepam most frequently report. In a group of around 3,500 people treated for anxiety, the most common side effects complained of from lorazepam were sedation (15.9%), dizziness (6.9%), weakness (4.2%), and unsteadiness (3.4%). Side effects such as sedation and unsteadiness increased with age. [61]
In the elderly, long-term benzodiazepine therapy is a risk factor for amplifying cognitive decline, [29] although gradual withdrawal is associated with improved cognitive status. [30] A study of alprazolam found that 8 weeks administration of alprazolam resulted in deficits that were detectable after several weeks but not after 3.5 years.
The consensus is to reduce dosage gradually over several weeks, e.g. 4 or more weeks for diazepam doses over 30 mg/day, [1] with the rate determined by the person's ability to tolerate symptoms. [120] The recommended reduction rates range from 50% of the initial dose every week or so, [121] to 10–25% of the daily dose every 2 weeks. [120]
Chlordiazepoxide is generally considered an inappropriate benzodiazepine for the elderly due to its long elimination half-life and the risks of accumulation. [10] Benzodiazepines require special precaution if used in the elderly, pregnancy, children, alcohol- or drug-dependent individuals and individuals with comorbid psychiatric disorders .
Failure to treat benzodiazepine dependence in the elderly can cause serious medical complications. [14] The elderly have less cognitive reserve and are more sensitive to the short (e.g., in between dose withdrawal) and protracted withdrawal effects of benzodiazepines, as well as the side-effects both from short-term and long-term use. This can ...
The normal starting dosage range of clorazepate is 15 to 60 mg per day. The drug is to be taken two to four times per day. Dosages as high as 90 to 120 mg per day may be used in the treatment of acute alcohol withdrawal. In the United States and Canada, clorazepate is available in 3.75, 7.5, and 15 mg capsules or tablets.