FDA Alerts Public about Danger of Skin Numbing Products

            On January 16, 2009 the FDA issued a Public Health Advisory on over-the-counter and prescription topical anesthetics.  The improper use of topical anesthetics can potentially cause life-threatening side effects which include an irregular heartbeat, seizures, breathing difficulties, coma, or death.  Topical formulations of lidocaine, tetracaine, benzocaine, and prilocaine can be absorbed systemically causing the adverse reactions.  Two deaths have been reported to be caused by topical anesthetic use prior to cosmetic hair removal.

            The FDA cautions patients to use the lowest effective concentration and encourages physicians to consider other analgesic options when appropriate.  The FDA warns consumers not to apply topical anesthetics over a large area of skin, use heavy application, use stronger concentrations than necessary, apply to irritated or broken skin, wrap with dressings, or apply heat to the area of application.  As skin temperature increases the systemic absorption of the topical anesthetic is unpredictable, increasing patient risk for serious adverse effects.  Healthcare professionals should educate patients on proper application and potential adverse effects of topical anesthetics.

References:
1.   www.fda.gov

Marci Pursglove, Doctor of Pharmacy Candidate