Original Prescription Strength Polyethylene Glycol 3350MiraLAX provides gentle, predictable constipation relief. It's clinically proven to relieve constipation and soften stool with no harsh side effects. MiraLAX works naturally with your body - it gently draws water back to your colon, allowing you to have a normal, complete bowel movement with no sudden urgency. *These statements have not been evaluated by the FDA. This product is not intended to diagnose, treat, cure or prevent any disease.