Hush Anesthetic

Serious side effects have been reported with lidocaine. See the “Lidocaine Precautions” section.

Topical:

Common side effects of topical lidocaine include irritation at site of application, including burning, blisters, bruising, redness, or swelling at the site of application. Lidocaine ointment, gel, and cream, as well as the oral solution, may also cause vomiting, seizures, ringing in the ears, and irregular heartbeat. Lidocaine ophthalmic gel may cause headache or bloodshot eyes.

Lidocaine may also cause dizziness and drowsiness. Do not drive or operate heavy machinery until you know how this medication affects you. 

Injectable:

Common side effects of injectable lidocaine include confusion, nervousness, numbness, blurred vision, irregular heartbeat, vomiting, seizures, ringing in the ears, headache, and shivering.

This is not a complete list of lidocaine side effects. Ask your doctor or pharmacist for more information.

Tell your doctor if you have any side effect that bothers you or that does not go away.

Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.

Tell your doctor about all of the medicines you take including prescription and non-prescription medicines, vitamins, and herbal supplements. Especially tell your doctor if you take:

• disopyramide (Norpace)
• flecainide (Tambocor)
• medications applied to the skin or mouth to treat pain
• mexiletine (Mexitil)
• moricizine (Ethmozine)
• procainamide (Procanabid, Pronestyl)
• propafenone (Rhythmol)
• quinidine (Quinidex)
• tocainide (Tonocard)

This is not a complete list of lidocaine drug interactions. Ask your doctor or pharmacist for more information.

Tell your doctor if you are pregnant or plan to become pregnant.

The FDA categorizes medications based on safety for use during pregnancy. Five categories - A, B, C, D, and X, are used to classify the possible risks to an unborn baby when a medication is taken during pregnancy.

Lidocaine falls into category B.

There are no well-done studies that have been done in humans with lidocaine. In animal studies, pregnant animals were given this medication, and the babies did not show any medical issues related to this medication.