Lidoderm is a local anesthetic (numbing medication). It works by blocking nerve signals in your body.
Lidoderm is used to relieve post-shingles pain. Apply Lidoderm only to intact skin with no blisters.
Lidocaine topical in other formulations is used to reduce pain or discomfort caused by skin irritations such as sunburn, insect bites, poison ivy, poison oak, poison sumac, and minor cuts, scratches, hemorrhoids, and burns. Lidocaine topical can also be used to treat sores inside the mouth, during dental procedures to numb the gums, and to numb the skin for a medical procedure (such as getting stiches).
An overdose of numbing medications can cause fatal side effects if too much of the medicine is absorbed through your skin and into your blood.
Overdose is more likely to occur when using a numbing medicine without the advice of a medical doctor (such as during a cosmetic procedure like laser hair removal). Symptoms may include uneven heartbeats, seizure (convulsions), coma, slowed breathing, or respiratory failure (breathing stops).
Do not use Lidoderm if you are allergic to any other type of numbing medicine.
Before using Lidoderm, tell your doctor if you are allergic to any drugs, or if you have liver disease, or broken, swollen, or damaged skin. You may not be able to use Lidoderm, or you may need dosage adjustments or special tests during treatment.
FDA pregnancy category B. Lidoderm is not expected to be harmful to an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant during treatment. Lidocaine can pass into breast milk and may harm a nursing baby. Do not use this medication without telling your doctor if you are breast-feeding a baby.
Get emergency medical help if you have any of these signs of an allergic reaction to Lidoderm: hives; difficulty breathing; swelling of your face, lips, tongue, or throat. Stop using Lidoderm and call your doctor at once if you have any of these serious side effects:
- uneven heartbeats;
- drowsiness, confusion;
- tremors, seizure (convulsions); or
- blurred vision.
Less serious Lidoderm side effects include:
- mild irritation, redness, or swelling where the medication is applied;
- numbness in places where the medicine is accidentally applied.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.