Ibandronate sodium monohydrate. Molecular model of the drug ibandronate sodium monohydrate (C9.H22.N.O7.P2.Na?H2.O). This bisphosphonate drug, sold under the brand name Boniva, is used in the prevention and treatment of osteoporosis and metastasis-associated skeletal fractures in people with cancer. Atoms are represented as spheres and are colour-coded: carbon (grey), hydrogen (white), nitrogen (blue), oxygen (red), chlorine (green), sulfur (yellow) and sodium (violet).