Lidocaine (patient information)

# Why is this medication prescribed
Lidocaine viscous, a local anesthetic, is used to treat the pain of a sore or irritated mouth and throat often associated with cancer chemotherapy and certain medical procedures. Lidocaine viscous is not normally used for sore throats due to cold, flu, or infections such as strep throat.
This medication is sometimes prescribed for other uses; ask your doctor or pharmacist for more information.

# How should this medicine be used
Lidocaine viscous comes as a thick liquid and should be shaken well before using. Lidocaine viscous usually is used as needed but not more frequently than every 3 hours, with a maximum of 8 doses in 24 hours. Follow the directions on your prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand. Use lidocaine exactly as directed. Do not use more or less of it or use it more often than prescribed by your doctor.
For a sore or irritated mouth, the dose should be placed in the mouth, swished around until the pain goes away, and spit out.
For a sore throat, the dose should be gargled and then may be swallowed. To avoid or decrease side effects, use the minimum amount of drug needed to relieve your pain.
Because lidocaine viscous decreases the feeling in your mouth and/or throat, it may affect your ability to swallow. Avoid eating for at least 1 hour after you have used this drug. You should also avoid chewing gum while using this medication.

# What special precautions should I follow
Before using lidocaine viscous,
tell your doctor and pharmacist if you are allergic to lidocaine, anesthetics, or any other drugs.
tell your doctor and pharmacist what prescription and nonprescription medications you are taking, including vitamins.
tell your doctor if you are pregnant, plan to become pregnant, or are breast-feeding. If you become pregnant while using lidocaine, call your doctor.
What should I do if I forget a dose?Return to top
Use the missed dose as soon as you remember it. However, if it is almost time for the next dose, skip the missed dose and continue your regular dosing schedule. Do not use a double dose to make up for a missed one.
What side effects can this medication cause?Return to top
Lidocaine viscous may cause side effects. If you experience any of the following symptoms, call your doctor immediately:
drowsiness
- blurred or double vision
- shakiness
- irregular heartbeat
- vomiting
- seizures or convulsions
- ringing in the ears
- rash
- severe itching or burning
If you experience a serious side effect, you or your doctor may send a report to the Food and Drug Administration's (FDA) MedWatch Adverse Event Reporting program online  or by phone .
What should I know about storage and disposal of this medication?Return to top
Keep this medication in the container it came in, tightly closed, and out of reach of children. Store it at room temperature and away from excess heat and moisture (not in the bathroom). Throw away any medication that is outdated or no longer needed. Talk to your pharmacist about the proper disposal of your medication.

# What other information should I know
Keep all appointments with your doctor.
Do not let anyone else use your medication. Ask your pharmacist any questions you have about refilling your prescription.
It is important for you to keep a written list of all of the prescription and nonprescription (over-the-counter) medicines you are taking, as well as any products such as vitamins, minerals, or other dietary supplements. You should bring this list with you each time you visit a doctor or if you are admitted to a hospital. It is also important information to carry with you in case of emergencies.
Brand names
Xylocaine Viscous