It is used to relieve pain caused by nerve damage (neuropathic pain) due to diabetes, shingles (herpes zoster infection), spinal cord injury, or other conditions. It is also used to treat widespread muscle pain and stiffness in people with fibromyalgia.
Common side effects
Sleepiness, Dizziness, Headache, Nasopharyngitis (inflammation of the throat and nasal passages), Increased appetite, Confusion, Disorientation, Abnormality of voluntary movements, Balance disorder (loss of balance), Lethargy, Blurred vision, Vertigo, Vomiting, Constipation, Muscle cramp, Edema (swelling), Erectile dysfunction, Weight gain