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Lidocaine and Prilocaine (Topical)
In the U.S.-
Another commonly used name for lidocaine is lignocaine.
This medicine contains a mixture of 2 local anesthetics ( an-ess-THET-iks) , lidocaine ( LYE-doe-kane) and prilocaine ( PRIL-oh-kane) . It is used to produce numbness or loss of feeling before certain painful procedures, such as injections, drawing blood from a vein, or removing small growths (warts, for example) from the skin.
This medicine deadens the nerve endings in the skin. It does not cause unconsciousness as general anesthetics used for surgery do.
In the U.S., this medicine is available only with your doctor's prescription. In Canada, it is available without a prescription. However, your doctor may have special instructions on the proper use and dose, depending on the reason you are using this medicine.
Before Using This Medicine
In deciding to use a medicine, the risks of using the medicine must be weighed against the good it will do. This is a decision you and your doctor will make. For this medicine, the following should be considered:
Allergies- Tell your doctor if you have ever had any unusual or allergic reaction to lidocaine, prilocaine, or other local anesthetics given by injection or applied to any part of the body as a liquid, cream, ointment, or spray. Also tell your health care professional if you are allergic to any other substances, such as foods, preservatives, or dyes.
Pregnancy- This mixture of lidocaine and prilocaine has not been studied in pregnant women. However, lidocaine and prilocaine (separately) have been given to pregnant women and have not been reported to cause birth defects or other problems.
Breast-feeding- Small amounts of lidocaine, and probably of prilocaine also, pass into breast milk. Many medicines that pass into breast milk in small amounts may be used safely while breast-feeding. Mothers who are breast-feeding and who wish to use this medicine should discuss this with their doctor.
Children- This medicine has been tested in children. Very young children (less than 1 year of age) may be especially sensitive to the effects of lidocaine and prilocaine. This may increase the chance of side effects. However, in effective doses, this medicine has not been shown to cause different side effects or problems in children older than 1 year of age than it does in adults.
Young children are often frightened when they receive injections or have other painful procedures done. This medicine helps prevent pain, but it will not calm a frightened child. Parents can help by staying calm and by comforting and reassuring the child.
Older adults- This medicine has not been studied specifically in older people. However, it is possible that the chance of some side effects may be increased in elderly people. Experience with local anesthetics given by injection or applied to other areas of the body (for example, the throat or the inside of the mouth) has shown that elderly people are usually more sensitive than younger adults to the effects of local anesthetics.
Other medicines- Although certain medicines should not be used together at all, in other cases two different medicines may be used together even if an interaction might occur. In these cases, your doctor may want to change the dose, or other precautions may be necessary. Before using this medicine, tell your health care professional if you are taking any other prescription or nonprescription (over-the-counter [OTC]) medicine, especially:
Other medical problems- The presence of other medical problems may affect the use of this medicine. Make sure you tell your doctor if you have any other medical problems, especially:
Proper Use of This Medicine
For safe and effective use of this medicine:
The dose of this medicine will be different for different patients. Follow your doctor's orders or the directions that come with the medicine . The following information includes only the average doses of this medicine. If your dose is different, do not change it unless your doctor tells you to do so.
To store this medicine:
Precautions While Using This Medicine
After applying this medicine to the skin of a child, watch the child carefully to make sure that he or she does not loosen or remove the bandage. Also, keep the child from getting any of the medicine into his or her mouth . This medicine can cause serious side effects, especially in children, if any of it gets into the mouth or is swallowed.
During the time that the area to which the medicine was applied feels numb, serious injury can occur without your knowing about it. Be especially careful to avoid injury until the anesthetic wears off or feeling returns to the area . For example, do not scratch or rub the area or allow very hot or very cold objects to touch it.
Side Effects of This Medicine
Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.
The following side effects may mean that a serious allergic reaction is occurring. Check with your doctor or get emergency help immediately if they occur, especially if several of them occur at the same time.
Also check with your health care professional, or get emergency help right away , if any of the following side effects occur:
Other side effects may occur that usually do not need medical attention. However, check with your doctor if any of the following side effects continue or are bothersome:
Other side effects not listed above may also occur in some patients. If you notice any other effects, check with your doctor.
Last updated: Tue, 06 Jan 2009 00:20:03 GMT