Medical News Today: MiraLAX (Polyethylene glycol 3350)

MiraLAX is a brand-name, over-the-counter product that’s typically used to treat short-term constipation. It contains polyethylene glycol 3350, which also comes as store-branded generic products. MiraLAX comes as a powder that you mix with liquid to drink. Learn about side effects, warnings, dosage, and more.