In the title compound, 3C12H24N+·C5H7N2O7P23 ·C2H6O·H2O, the zoledronic acid molecule is singly protonated and stabilized by an intramolecular O—H...O interaction. The three-dimensional crystal structure is stabilized by intermolecular O—H...O, O—H...N and N—H...O interactions. The ethanol solvent molecule is disordered over two positions; the site-occupancy factor of the major component is 0.510 (4).
