PHN is long-term nerve pain, which is a common complication of shingles. These lidocaine patches are prescription-only. OTC lidocaine 4% patches can be used to relieve minor aches and pains ...

Its products include ZTlido, a prescription lidocaine topical product approved by the FDA for the relief of neuropathic pain associated with PHN, which is a form of post-shingles nerve pain ...