Zoledronic Acid Injection contains zoledronic acid, a bisphosphonic acid which is an inhibitor of osteoclastic bone resorption. Zoledronic acid is designated chemically as (1-Hydroxy-2-imidazol-1-yl-phosphonoethyl) phosphonic acid monohydrate and its structural formula is:
Zoledronic acid monohydrate is a white crystalline powder. Its molecular formula is C5H10N2O7P2 • H2O and a molar mass of 290.1 g/Mol. Zoledronic acid monohydrate is highly soluble in 0.1N sodium hydroxide solution, sparingly soluble in water and 0.1N hydrochloric acid, and practically insoluble in organic solvents. The pH of the Zoledronic Acid Injection solution for infusion is approximately 6.0 - 7.0.
Zoledronic Acid Injection is available as a sterile solution in Non-PVC flexible containers for intravenous infusion. One container with 100 mL solution contains 5.330 mg of zoledronic acid monohydrate, equivalent to 5 mg zoledronic acid on an anhydrous basis.
Inactive Ingredients: 4950 mg of mannitol, USP; and 30 mg of sodium citrate, USP.