lidocaine injection

lidocaine injection

Pronunciation: LYE doe kane

Brand: Anestacaine, UAD Caine, Xylocaine HCl, Xylocaine-MPF

What is the most important information I should know about lidocaine injection?

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You should not receive this medication if you are allergic to lidocaine or any other type of numbing medicine.

Before you receive lidocaine injection, tell your doctor if you have liver or kidney disease, heart disease, coronary artery disease, circulation problems, or a history of malignant hyperthermia.

To treat irregular heart rhythms, your doctor may prescribe a LidoPen auto-injector. This is a prefilled automatic injection device to be used in an emergency. Keep the device with you at all times.

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Your doctor will describe the signs and symptoms to watch for when deciding when it's time to use lidocaine injection at home. Never use the LidoPen auto-injector without first calling your doctor.

With the LidoPen auto-injector you will also receive a CardioBeeper to transmit your heart rate and rhythm to your doctor over a telephone. Read all provided instructions and practice using the CardioBeeper.

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Lidocaine can cause side effects that may impair your thinking or reactions. Unless absolutely necessary, do not drive after using this medication

What is lidocaine injection?

Lidocaine is a local anesthetic (numbing medication). It works by blocking nerve signals in your body.

Lidocaine injection is used to numb an area of your body to help reduce pain or discomfort caused by invasive medical procedures such as surgery, needle punctures, or insertion of a catheter or breathing tube.

Lidocaine injection is also given in an epidural (spinal block) to reduce the discomfort of contractions during labor.

Lidocaine injection is sometimes used to treat irregular heart rhythms that may signal a possible heart attack.

Lidocaine injection may also be used for other purposes not listed in this medication guide.

What should I discuss with my healthcare provider before receiving lidocaine injection?

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You should not receive this medication if you are allergic to lidocaine or any other type of numbing medicine.

If you have any of these other conditions, you may need a dose adjustment or special tests to safely use lidocaine injection:

  • liver disease;
  • kidney disease;
  • heart disease;
  • coronary artery disease, circulation problems; or
  • a history of malignant hyperthermia.

FDA pregnancy category B. This medication is not expected to be harmful to an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant during treatment.

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It is not known whether lidocaine injection passes into breast milk or if it could harm a nursing baby. Do not use this medication without telling your doctor if you are breast-feeding a baby.

How is lidocaine injection given?

Lidocaine is given as an injection through a needle placed into a vein or directly into the body area to be numbed. Your doctor, nurse, or other healthcare provider will give you this injection.

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Your breathing, blood pressure, oxygen levels, and other vital signs will be watched closely while you are receiving lidocaine injection in a hospital setting.

To treat irregular heart rhythms, you may be shown how to use your medicine at home. Do not self-inject this medicine if you do not fully understand how to give the injection and properly dispose of needles and other items used in giving the medicine.

The LidoPen auto-injector is a prefilled automatic injection device to be used in an emergency. Keep the device with you at all times. Your doctor will describe the signs and symptoms to watch for when deciding when it's time to use the injection.

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Never use the LidoPen auto-injector without first calling your doctor.

Do not use the auto-injector in or near a vein or into your buttocks. Inject the medication only in your upper thigh or upper arm.

With the LidoPen auto-injector you will also receive a CardioBeeper. This device is used to transmit your heart rate and rhythm to your doctor over a telephone. Read all provided instructions and practice using the CardioBeeper so you will be able to quickly use it in an emergency.

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Store the LidoPen auto-injector at room temperature away from moisture and extreme hot or cold.

What happens if I miss a dose?

Since lidocaine injection is used only when needed, you are not likely to be on a dosing schedule.

Never use the LidoPen auto-injector without first calling your doctor.

What happens if I overdose?

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Seek emergency medical attention if you think you have received too much of this medicine.

Overdose symptoms may include drowsiness, confusion, nervousness, ringing in your ears, blurred vision, feeling hot or cold, numbness, muscle twitches, uneven heartbeats, seizure (convulsions), slowed breathing, or respiratory failure (breathing stops).

What should I avoid while receiving lidocaine injection?

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Lidocaine can cause side effects that may impair your thinking or reactions. Unless absolutely necessary, do not drive after using this medication

Avoid eating or chewing within 1 hour after lidocaine injection is used to numb your mouth or throat. You may have trouble swallowing which could lead to choking. You may also accidentally bite the inside of your mouth if you are still numb an hour after treatment with lidocaine injection.

What are the possible side effects of lidocaine injection?

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Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

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Tell your caregivers at once if you have any of these serious side effects:

  • feeling anxious, shaky, dizzy, restless, or depressed;
  • drowsiness, vomiting, ringing in your ears, blurred vision;
  • confusion, twitching, seizure (convulsions);
  • fast heart rate, rapid breathing, feeling hot or cold;
  • weak or shallow breathing, slow heart rate, weak pulse; or
  • feeling like you might pass out.

Less serious side effects include:

  • mild bruising, redness, itching, or swelling where the medication was injected;
  • mild dizziness;
  • nausea;
  • 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.

What other drugs will affect lidocaine injection?

There may be other drugs that can interact with lidocaine injection. Tell your doctor about all the prescription and over-the-counter medications you use. This includes vitamins, minerals, herbal products, and drugs prescribed by other doctors. Do not start using a new medication without telling your doctor.

Where can I get more information?

Your doctor or pharmacist can provide more information about lidocaine injection.


Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.

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