Risedronate is a prescription drug used to treat or prevent osteoporosis and to treat Paget's disease of bone. It comes in immediate-release and delayed-release tablet forms, usually taken orally. The drug works by slowing the natural breakdown of bones and increasing bone density. Common side effects include stomach upset and joint pain, while serious side effects may include allergic reactions and esophagus problems. It should only be taken with water and should not be taken with other medications, vitamins, or herbs to avoid interactions. Seek immediate medical attention if severe side effects or allergic reactions occur. Pregnant women, breastfeeding women, and people with kidney problems should use it under medical supervision.