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(lidocaine and tetracaine) Cream 7%/7%
PLIAGLIS (lidocaine and tetracaine) Cream 7% / 7% is a topical local anesthetic cream that forms a pliable peel on the skin when exposed to air. The drug formulation is an emulsion in which the oil phase is a 1:1 eutectic mixture of lidocaine 7% and tetracaine 7%. The eutectic mixture has a melting point below room temperature and therefore both local anesthetics exist as a liquid oil rather than as crystals.
The net weight of lidocaine is 2.1 g and of tetracaine is 2.1 g per 30 g tube.
The net weight of lidocaine is 4.2 g and of tetracaine is 4.2 g per 60 g tube.
The net weight of lidocaine is 7.0 g and of tetracaine is 7.0 g per 100 g tube.
Lidocaine, an amide local anesthetic, is chemically designated as acetamide, 2-(diethylamino)-N-(2,6-dimethylphenyl) and has an octanol:water partition ratio of 182 at pH 7.3. The molecular weight of lidocaine is 234.3, and the molecular formula is C14H22N2O. The structural formula is:
Tetracaine, an ester local anesthetic, is chemically designated as 2-dimethylaminoethyl 4-n-butylaminobenzoate and has an octanol:water partition ratio of 5370 at pH 7.3. The molecular weight of tetracaine is 264.4, and the molecular formula is C15H24N2O2. The structural formula is:
Each gram of PLIAGLIS Cream contains lidocaine 70 mg and tetracaine 70 mg in a 1:1 eutectic mixture and it also contains the following inactive ingredients: dibasic calcium phosphate, methylparaben, petrolatum, polyvinyl alcohol, propylparaben, purified water, and sorbitan monopalmitate.
Last reviewed on RxList: 12/12/2013
This monograph has been modified to include the generic and brand name in many instances.
Additional Pliaglis Information
- Pliaglis Drug Interactions Center: lidocaine-tetracaine top
- Pliaglis Side Effects Center
- Pliaglis FDA Approved Prescribing Information including Dosage
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