“…2,3 As Lee et al point out, topical NSAIDs are indicated for reducing the pain and improving the function of OA because of ease of use, safety, and efficacy, thus, topical NSAIDs are recommended as firstline therapy for OA. [1][2][3] Diclofenac gel is the most commonly used topical NSAID worldwide, although multiple other NSAIDs have been used in many diverse vehicles including cream, foam, spray, ointments, plasters, and patches. [4][5][6][7][8] In clinical trials, NSAID patches with diclofenac, flubiprofen, loxoprofen, and other NSAIDs have been shown to be effective for OA pain although toxicity may be greater than strictly topical NSAID due to greater systemic absorption from the patch design.…”