Evenity is a prescription injection used to treat osteoporosis in certain adults. It is specifically for postmenopausal females, helping to increase bone density and reduce the risk of fractures. Evenity comes as a liquid solution in prefilled syringes and is administered via subcutaneous injection. The recommended dosage is once a month for 12 months, but it should not be used for more than 12 doses. Common side effects include injection site reactions, joint pain, and headaches. Serious side effects may include heart attacks and strokes. Your doctor may also recommend taking calcium and vitamin D supplements during treatment. Consult your doctor for more information before using Evenity.