Morphine is the greatest anodyne we possess, and no drug yet discovered equals it in pain-relieving power.
It is of undoubted value as a local anodyne in sciatica and neuralgia, especially in ordinary facial or trigeminal neuralgia.
It acts similarly, though less markedly, upon the nerves which determine the secretion of the perspiration, and is therefore a local anaesthetic or anodyne and an anhidrotic. Being rapidly absorbed into the blood, it exercises a long and highly important series of actions on nearly every part and function of the nervous system.
The therapeutic applications of the drug are based entirely upon its anaesthetic or anodyne power.
In such cases, it is necessary to use such anodyne measures as will not interfere with the subsequent demands that may be made of the skin, i.e.