Postherpetic neuralgia (PHN) is referred to the pain following healing of the rash associated with shingles.
Gralise is available as a prescription drug in a 30-day starter pack, which allows titration of the drug to full dose in 15 days, as well as bottles of 600 mg and 300 mg tablets.
The drug is a formulation of gabapentin made using polymer technology which helps in gradual release of the drug.