A non-steroidal anti-inflammatory drug (NSAID), Vioxx relieves pain, inflammation and swelling. For the treatment of arthritis, menstrual pain or other acute discomfort, Vioxx works by blocking the enzyme in the body that produces prostaglandins. Generally, Vioxx is ingested by mouth, with food. Dosage is contingent upon the patient’s medical condition and physician’s instructions. It is not recommended to lie down for at least 30 minutes after taking Vioxx. The adverse effects associated with Vioxx include headache, dizziness, diarrhea, nausea, vomiting, heartburn, stomach pain, swelling of the legs/feet, high blood pressure, back pain, or tiredness. Check with a doctor regarding your health to determine if Vioxx is right for you.