Bottom line

(ZTLido 1.8%) is a brand name lidocaine patch currently approced for postherpetic neuralgia and will stay that why for now as it did not beat placebo for the treatment of patients with chronic nonspecific neck pain
For both pain scores the pain decreased by 1.0 point with lidocaine and by 0.5 points with placebo. These differences were neither statistically significant nor deemed to be clinically important!


https://pubs.asahq.org/anesthesiology/article/140/3/513/139530/Multicenter-Randomized-Placebo-controlled