Voltaren Topical Gel is used to treat
joint pain in the hands, wrists, elbows, knees, ankles, or feet caused by
osteoarthritis. This medication is for pain. I do not see why a patient with respiratory condition, specifically COPD cannot be safe using the drug for musculo-skeletal pain relief, unless otherwise contraindicated or advised by the physician. Please consult your doctor for further advise.