<Li> Benzodiazepines are effective as medication given a couple of hours before surgery to relieve anxiety . They also produce amnesia , which can be useful , as patients may not remember unpleasantness from the procedure . They are also used in patients with dental phobia as well as some ophthalmic procedures like refractive surgery ; although such use is controversial and only recommended for those who are very anxious . Midazolam is the most commonly prescribed for this use because of its strong sedative actions and fast recovery time , as well as its water solubility , which reduces pain upon injection . Diazepam and lorazepam are sometimes used . Lorazepam has particularly marked amnesic properties that may make it more effective when amnesia is the desired effect . </Li>
a drug that might be used in surgery for its amnesic properties is
Benzodiazepines