*Maximum strength lidocaine available over the counter without a prescription.
Noninferioirty with Rx lidocaine 5% explained in Castro, Eric and David V. Dent, “A comparison of transdermal over-the-counter lidocaine 3.6% menthol 1.25%, Rx lidocaine 5% and placebo for back pain and arthritis, “Pain Management, Vol. 7, No.6 (2017).
**As many as three patches were applied to cover the area of greatest pain as fully as possible for 12 hours. The patients wearing the lidocaine patches had significantly reduced pain intensity at all time points (from 30 minutes to 12 hours after patch application) compared with those patients receiving either no treatment or wearing a placebo patch, as explained in Pasero, Chris and McCaffery, Margo, “The Lidocaine Patch,“ American Journal of Nursing, Vol. 101, No. 3, (March 2001) p. 22-23.
30 MINUTES TO 12 HOURS
Lidocaine works by causing a temporary numbing effect