Zoledronic acid belongs to a new class of bisphosphonates that specifically target bone tissue. It is one of the most potent inhibitors of osteoclastic bone resorption known to date.
The selective action of bisphosphonates on bone is based on their high affinity for mineralized bone tissue, but the molecular mechanism leading to the inhibition of osteoclastic activity is not yet understood. Animal studies have shown that zoledronic acid inhibits bone resorption without adversely affecting bone formation, mineralization, or mechanical properties.