Bicyclists get a glimpse of Omaha history on tour through city. More than 30 bicyclists took a spin back in time Sunday for the annual Omaha Historical Tour and got a reminder, despite the potholes, that cities are best seen on two wheels or on foot.
Analgesics are a class of drugs that relieve pain without causing the loss of consciousness, as explained in the Spine-health glossary.
A drug may be classified by the chemical type of the active ingredient or by the way it is used to treat a particular condition. Each drug can be classified into one or more drug classes. Narcotic analgesics are drugs that relieve pain, can cause numbness and induce a state of unconsciousness. They work by binding to opioid receptors, which are present in the central and peripheral nervous system.