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(lidocaine 2.5% and prilocaine 2.5%) Cream
- Patient Information:
Details with Side Effects
EMLA Cream (lidocaine 2.5% and prilocaine 2.5%) is an emulsion in which the oil phase is a eutectic mixture of lidocaine and prilocaine in a ratio of 1:1 by weight. This eutectic mixture has a melting point below room temperature and therefore both local anesthetics exist as a liquid oil rather than as crystals. It is packaged in 5 gram and 30 gram tubes.
Lidocaine is chemically designated as acetamide, 2-(diethylamino)-N-(2,6-dimethylphenyl), has an octanol: water partition ratio of 43 at pH 7.4, and has the following structure:
Prilocaine is chemically designated as propanamide, N-(2-methylphenyl)-2-(propylamino), has an octanol: water partition ratio of 25 at pH 7.4, and has the following structure:
Each gram of EMLA (lidocaine and prilocaine) Cream contains lidocaine 25 mg, prilocaine 25 mg, polyoxyethylene fatty acid esters (as emulsifiers), carboxypolymethylene (as a thickening agent), sodium hydroxide to adjust to a pH approximating 9, and purified water to 1 gram. EMLA (lidocaine and prilocaine) Cream contains no preservative, however it passes the USP antimicrobial effectiveness test due to the pH. The specific gravity of EMLA (lidocaine and prilocaine) Cream is 1.00.
What are the possible side effects of lidocaine and prilocaine topical (Emla)?
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.
Stop using lidocaine and prilocaine topical and call your doctor at once if you have any of these serious side effects:
- severe burning, stinging, or sensitivity where the medicine is applied;
- swelling or redness;
- sudden dizziness or sleepiness after medicine is applied;
- bruising or purple appearance of the skin; or
- unusual sensations of...
What are the precautions when taking lidocaine and prilocaine (Emla)?
Before using this product, tell your doctor or pharmacist if you are allergic to lidocaine or prilocaine; or to any other amide anesthetics (e.g., bupivacaine); or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.
This medication should not be used if you have certain medical conditions. Before using this medicine, consult your doctor or pharmacist if you have: certain blood disorder (methemoglobinemia).
Before using this medication, tell your doctor or pharmacist your medical history, especially of: certain blood disorder (G6PD deficiency, especially in children), heart disease (e.g., irregular heartbeat), kidney disease, liver...
Last reviewed on RxList: 8/13/2008
This monograph has been modified to include the generic and brand name in many instances.
Additional Emla Information
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