Adapin; Sinequan 

Herpes Zoster; Post-herpetic Neuralgia 

Doxepin, is a tricyclic antidepressant and is used to treat depression and anxiety. It is also used in some cases to treat persistent hives when other treatments have failed.

Herpes zoster, colloquially known as shingles, is the reactivation of varicella zoster virus, leading to a crop of painful blisters over the area of a dermatome. It occurs very rarely in children and adults, but its incidence is high in the elderly (over 60), as well as in any age group of immunocompromised patients. It strikes 500,000 people per year in the United States. Treatment is generally with acyclovir. Many develop a painful condition termed postherpetic neuralgia.

Doxepin as related to Shingles