How does the Lidocaine spray work exactly? | Lidocaine spray

How does the Lidocaine spray work exactly?

The Lidocaine spray is absorbed by the skin or mucous membranes and then unfolds its effect in the area of the local nerve fibers. The active ingredient blocks the sodium channels of nerve fibers. Nerves transmit information about electrical potentials.

The sodium channels are indispensable for this function. If the sodium channels are blocked, a subsequent pain stimulus cannot be transmitted to the brain, because the nerve fibers in the area of the pain stimulus can no longer build up electrical potentials. This is known as reduced conductivity of the nerve fiber.This means that no more information flows from the affected area to the brain, where a sensation of pain would first have to be processed in order to enter consciousness.

How long does the effect of lidocaine last?

The effect lasts for about two hours. This period can be influenced by various factors. Dosage and the absorption capacity of the tissue play a role. Furthermore, lidocaine is broken down by the liver, so that in patients with liver disease the breakdown is slower and the duration of action may be longer.

What are the side effects of Lidocaine spray?

In addition to the allergy, skin and mucous membrane irritation can occur, especially in the areas where the spray was applied. Occasionally swelling may occur in the mouth and throat area. These usually subside within a few days and do not require further therapy. If the swelling occurs in the area of the larynx, temporary hoarseness may occur. If the spray is overdosed, the active ingredient can enter the bloodstream and cause poisoning, which manifests itself particularly with symptoms in the heart.

What happens if you have an allergy to lidocaine?

An allergic reaction to lidocaine is possible and can lead to a severe hypersensitivity reaction and anaphylactic shock. Shock is a condition in which the body’s own tissues can no longer be supplied with sufficient oxygen. In the case of lidocaine, this is triggered by an excessive allergic reaction.

This is characterized by swelling of the skins or mucous membranes that have come into contact with lidocaine as well as redness and possibly itching. If an allergy to the local anesthetic is known, a different active ingredient should be used if possible. Often, however, an untested allergy to lidocaine turns out to be incorrect.