Active ingredients include menthol, camphor, methyl salicylate, lidocaine, or capsaicin. Although generally safe, Salonpas pain patches can cause burning, itching, or redness in some people.

PHN is long-term nerve pain, which is a common complication ... Aspercreme Lidocare Salonpas Prescription-only lidocaine patches come in 5% or 1.8% patches. Zlido is a brand name for a 1.8% ...