Patent ID: 7569584

Claim:
A method of treating a condition in a mammal in need thereof comprising administering to the mammal a pharmaceutical composition containing a therapeutically effective dose of a compound of the formula or a pharameceutically acceptable salt thereof wherein the carbon marked with the star is asymmetric whereby the compound has dextrorotatory and levo-rotatory enantiomers, wherein the condition is selected from the group consisting of chronic pain, visceral pain, neuropathic pain, corneal pain, glaucoma, elevated intraocular pressure, ischemic neuropathies, diarrhea, nasal congestion, muscle spasticity, diuresis, withdrawal syndromes, optic neuropathy, spinal ischemia, stroke, memory and cognition deficits, attention deficit disorder, psychoses, manic disorders, anxiety, depression, hypertension, congestive heart failure, cardiac ischemia, arthritis, spondylitis, gouty arthritis, osteoarthritis, juvenile arthritis, lupus erythematosus, chronic gastrointestinal inflammations, Crohn's disease, gastritis, irritable bowel disease (IBD), functional dyspepsia and ulcerative colitis.