Active Ingredient

Lidocaine

Lidocaine is a local anesthetic commonly used to numb specific areas of the body. It helps reduce pain or discomfort caused by invasive medical procedures or minor skin conditions.

It is also used in various forms, such as creams, gels, or injections, depending on the medical need.

Written By Douglas C. Goldberg, MD

Reviewed By Philip Schein, MD

Last Updated 28 Nov 2025

Available Lidocaine Brands

Xylocaine

Strengths 50 gm

Hiforce Delay Spray

Strengths 5%

Lidocaine Uses

Lidocaine is utilized in various medical settings to manage pain and discomfort. Here are some typical uses:

Relief of pain from minor burns or insect bites.
Numbing the skin before surgical procedures.
Treating pain from hemorrhoids or anal fissures.
Reducing pain during dental procedures.
Managing nerve pain in certain conditions.

How Lidocaine Works

Lidocaine works by blocking nerve signals in your body. It temporarily numbs the area where it is applied, preventing pain signals from reaching the brain.

As a local anesthetic, it interferes with the sodium channels in nerve cells, which are essential for nerve signal transmission.

This action helps in reducing pain and discomfort effectively in the targeted area.

Common side effects of Lidocaine

Not everyone experiences side effects from Lidocaine, and many are mild and temporary. Common side effects include:

Redness or swelling at the application site.
Mild itching or irritation.
Numbness beyond the intended area.
Dizziness or lightheadedness.
Nausea.
Headache.

If you experience serious or persistent symptoms, contact your doctor promptly.

Avoid applying Lidocaine to large areas of the skin or using it for extended periods unless directed by a healthcare provider.
Do not mix with alcohol or other substances that may increase drowsiness or dizziness.
Inform your doctor of any allergies or existing medical conditions before using Lidocaine.
Monitor for any unusual symptoms and seek medical attention if necessary.
Use caution when performing tasks that require alertness, as Lidocaine may cause dizziness.

Always consult your doctor or healthcare professional for personalized advice and guidance.

Frequently Asked Questions

How quickly does Lidocaine work?

Lidocaine typically starts to work within a few minutes after application, providing quick relief from pain or discomfort.

How long does the effect of Lidocaine last?

The numbing effect of Lidocaine can last for about 30 minutes to an hour, depending on the form used and the area treated.

Can I use Lidocaine if I am pregnant?

Consult your doctor if you are pregnant or planning to become pregnant before using Lidocaine, as they can provide guidance based on your specific situation.

Are there any interactions I should be aware of?

Lidocaine may interact with certain medications, so it’s important to inform your healthcare provider about all the drugs you are taking.

Is it safe to use Lidocaine for children?

Lidocaine should be used in children only under the guidance of a healthcare professional to ensure safety and appropriate usage.