Lidocaine Injection

(lye' doe kane)

WHY is this medicine prescribed?

Lidocaine injection is used to treat arrhythmias (irregular heartbeats). Lidocaine injection is in a class of medications called antiarrhythmics. It works by acting on the heart muscle to improve the heart's rhythm.

Are there OTHER USES for this medicine?

This medication may be prescribed for other uses; ask your doctor or pharmacist for more information.

HOW should this medicine be used?

Lidocaine injection comes as a solution (liquid) for injection. It may be injected or mixed with other fluids and given into a vein by a healthcare provider.

Your doctor will increase or decrease your dose depending on your response. Lidocaine injection is routinely given for a short period of time, usually for less than 24 hours.

Ask your pharmacist or doctor for a copy of the manufacturer's information for the patient.

What SPECIAL PRECAUTIONS should I follow?

Before receiving lidocaine injection,

• tell your doctor or pharmacist if you are allergic to this drug, any part of this drug, or any otherdrugs, foods or substances. Tell your doctor or pharmacist about the allergy and whatsymptoms you had.

• tell your doctor and pharmacist what prescription and nonprescription medications, vitamins, nutritional supplements, and herbal products you are taking or plan to take while receiving lidocaine injection. Your doctor may need to change the doses of your medications or monitor you carefully for side effects.

• tell your doctor if you have serious heart rhythm problems such as Stokes-Adams syndrome, Wolff-Parkinson-White syndrome, or any type of heart block. Your doctor will probably tell you not to receive lidocaine injection.

• tell your doctor if you have or have ever had heart, kidney, or liver disease.

• tell your doctor if you are pregnant, plan to become pregnant, or are breast-feeding.

What SPECIAL DIETARY instructions should I follow?

Unless your doctor tells you otherwise, continue your normal diet.

What SIDE EFFECTS can this medicine cause?

Lidocaine injection may cause side effects. Tell your doctor if any of these symptoms are severe or do not go away:

• light-headedness, drowsiness, dizziness
• ringing in the ears
• blurry or double vision
• nausea or vomiting
• feeling hot or cold or numbness
• twitching or tremors

Some side effects can be serious. If you experience any of these symptoms tell your doctor immediately:

• rash, hives, difficulty breathing
• pale, gray, or blue colored skin; headache;rapid heart rate; shortness of breath; lightheadedness; or fatigue
• seizures
• slowing of heartbeat
• difficulty breathing

Lidocaine injection may cause other side effects. Call your doctor if you have any unusual problems while taking this medication.

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 (https://www.fda.gov/Safety/MedWatch) or by phone (1-800-332-1088).

What OTHER INFORMATION should I know?

Keep all appointments with your doctor. Your doctor will order certain lab tests to check your body's response to lidocaine injection.

Keep a written list of all of the prescription and nonprescription (over-the-counter) medicinesvitamins, minerals, and dietary supplements you are taking. Bring this list with you each timeyou visit a doctor or if you are admitted to the hospital. You should carry the list with you incase of emergencies.

This report on medications is for your information only, and is not considered individual patient advice. Because of the changing nature of drug information, please consult your physician or pharmacist about specific clinical use.

The American Society of Health-System Pharmacists, Inc. represents that the information provided hereunder was formulated with a reasonable standard of care, and in conformity with professional standards in the field. The American Society of Health-System Pharmacists, Inc. makes no representations or warranties, express or implied, including, but not limited to, any implied warranty of merchantability and/or fitness for a particular purpose, with respect to such information and specifically disclaims all such warranties. Users are advised that decisions regarding drug therapy are complex medical decisions requiring the independent, informed decision of an appropriate health care professional, and the information is provided for informational purposes only. The entire monograph for a drug should be reviewed for a thorough understanding of the drug's actions, uses and side effects. The American Society of Health-System Pharmacists, Inc. does not endorse or recommend the use of any drug. The information is not a substitute for medical care.

AHFS^® Patient Medication Information™. © Copyright, 2025. The American Society of Health-System Pharmacists^®, 4500 East-West Highway, Suite 900, Bethesda, Maryland. All Rights Reserved. Duplication for commercial use must be authorized by ASHP.

Selected Revisions: April 15, 2025.