Relmada Therapeutics, Inc. (RLMD), a clinical-stage company developing novel therapies for the treatment of chronic pain, announced that d-Methadone (dextromethadone, REL-1017), a N-methyl-d-aspartate (NMDA) receptor antagonist in development as a treatment for both depression and chronic neuropathic pain, has received Orphan Drug designation from the US Food and Drug Administration (FDA) for the management of postherpetic neuralgia. Postherpetic neuralgia (PHN) is a painful neuropathic condition resulting from an outbreak of the herpes zoster virus, otherwise known as shingles.

