what are lidocaine patches used for
Applying the patches for a longer time or using more than 3 patches at a time could result in. increased absorption of lidocaine and high blood concentrations, leading to serious side. effects. Lidocaine toxicity could be expected at lidocaine blood concentrations above 5 Âµg/mL. (1). Off Label Uses: Neuropathic pain: Lidoderm patches have been shown to be effective in treating neuropathic. pain of various types as monotherapy and as adjunctive therapy to an analgesic regimen.