available over the counter: no

uses: mild to moderate pain

mechanism of action: propoxyphene acts, as do other opioids, on spinal cord and brain;  acetaminophen interferes with prostaglandins, which cause inflammation and make nerves more sensitive

side effects

• common: dizziness, lightheadedness, constipation, nausea, vomiting, drowsiness, fatigue
• less common: gastric pain, euphoria, depression, loss of appetite, blurred vision, nightmares, nervousness, insomnia

concerns: do not increase your dose if medication not taking effect