On occasion, your healthcare provider may recommend doxepin for treating something other than depression. This is called an "off-label" use. At this time, there are several off-label doxepin uses, such as the treatment of the following conditions:
Chronic pain, especially nerve pain (neuropathic pain)
Itchy rashes (due to the antihistamine-like actions of doxepin).
Using high-dose doxepin capsules or liquid to treat insomnia is also an off-label use, since only the low-dose tablets (Silenor) are approved for insomnia treatment.