Authorities were concerned about the creams because although some are prescribed by physicians as part of medical care, some products are available without prescription and are used by people who are not supervised by healthcare professionals. This increases the risk that people will apply too much of the creams and increase their toxic effects. The FDA has received reports of slowed or stopped breathing, irregular heart beats, seizures and coma in both adults and children using the product. The reports involved people using the creams for approved and unapproved conditions.
The medications in the creams are absorbed by the skin and act to block pain sensations. However, these drugs can pass into your bloodstream and, in large concentrations, cause serious side effects. The chances of these harmful effects increase if large amounts of numbing creams are used, if they are allowed to remain on the skin for long periods of time or if they are applied over areas where the skin is already irritated (such as from a rash or wound). Elevated skin temperatures, which may occur from wrapping the skin or using a heating pad, can also increase absorption of the anesthetic.
The FDA recommends consumers consider the following when using topical numbing products:
- Use only products approved by the FDA. To verify if your product has been approved, go to the FDA's Web site at http://www.fda.gov/cder/ob/default.htm.
- Use topical anesthetics that contain the lowest amount of anesthetic possible to relieve pain. Consult your physician about the amount needed in your procedure, including any side effects associated with this use.
Obtain instructions from your physician on the proper use of the products, especially if you are undergoing a cosmetic procedure at a location other than a healthcare facility. If you are instructed to wrap or cover your skin with dressing or other materials, be aware that this may increase the risk of side effects.
Copyright 2007 iVillage Total Health.
