This is accomplished along a continuum of sedation levels: Prior to the administration of medications, clinicians must know the level of sedation required for a given procedure and the appropriate dose of the pharmacologic agent or agents chosen.
This determines the equipment that one should have readily available prior to starting the procedure.
Common drug classes used for sedation are benzodiazepines, barbiturates, and antihistamines.
That means you can control your symptoms with only 1 or 2 doses each day compared with older medications, which usually require doses every 4 to 6 hours to maintain their effectiveness.
The newer antihistamines are available only by prescription.
Because some can cause serious side effects or interact with other medications you are taking, be sure to let your doctor know all the medications you take.
Your doctor can guide you to the right antihistamine for you.
You may have taken antihistamines in the past and found it hard to concentrate or stay awake.