Table 1

 Relative potency of bisphosphonates to inhibit bone resorption

BisphosphonateRelative potency
Etidronate1
Clodronate10
Pamidronate100
Olpadronate200–500
Ibandronate500–1000
Alendronate1000–2000
Risedronate2000
Zoledronate10000