Some sedating antihistamines are useful as alternatives to other hypnotics.
Their sedation properties can aid sleep and can be used for occasional relief from insomnia. There are options availble OTC which can be purchased
The drowsiness effect can run over to the next day and dry mouth is a common side effect, along with other antimuscarinic side effects.
Sedative effect can diminish with prolonged use so advise individuals to use intermittently before stepping up treatment to a Z hypnotic or Benzodiazepine.