Pamidronate Disodium Anhydrous

FDA approved drugs -> Active ingredient

FDA approved drugs -> Active ingredient

Warning

H302 (100%): Harmful if swallowed [Warning Acute toxicity, oral]

P260, P261, P264, P264+P265, P270, P271, P280, P301+P317, P302+P352, P304+P340, P305+P351+P338, P308+P316, P319, P321, P330, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501 (click each P-code to see the statement)

Aggregated GHS information provided per 6 reports by companies from 5 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.

The mechanism of action of pamidronate is inhibition of bone resorption. Pamidronate adsorbs to calcium phosphate (hydroxyapatite) crystals in bone and may directly block dissolution of this mineral component of bone. In vitro studies also suggest that inhibition of osteoclast activity contributes to inhibition of bone resorption. Pamidronate also targets farnesyl pyrophosphate (FPP) synthase. Nitrogen-containing bisphosphonates (such as pamidronate, alendronate, risedronate, ibandronate and zoledronate) appear to act as analogues of isoprenoid diphosphate lipids, thereby inhibiting FPP synthase, an enzyme in the mevalonate pathway. Inhibition of this enzyme in osteoclasts prevents the biosynthesis of isoprenoid lipids (FPP and GGPP) that are essential for the post-translational farnesylation and geranylgeranylation of small GTPase signalling proteins. This activity inhibits osteoclast activity and reduces bone resorption and turnover. In postmenopausal women, it reduces the elevated rate of bone turnover, leading to, on average, a net gain in bone mass.

Drug Induced Liver Injury Rank (DILIrank 2.0)

Pamidronate disodium

Ambiguous-DILI-concern

3

Adverse reactions

DOI:10.1016/j.drudis.2016.02.015

Pamidronate is not metabolized and is exclusively eliminated by renal excretion. Route of Elimination: Pamidronate is not metabolized and is exclusively eliminated by renal excretion. Half Life: The mean ± SD elimination half-life is 28 ± 7 hours

PAMIDRONATE DISODIUM

Diphosphonates [CS]; Bisphosphonate [EPC]

Pamidronate is in a class of drugs called bisphosphonates. Pamidronate reduces breakdown of the bones. Pamidronate is used in the treatment of Paget's disease of bone; to reduce high levels of calcium in the blood associated with malignancy (cancer); and to reduce the breakdown of bone due to metastases of breast cancer or multiple myeloma. For the treatment of moderate or severe hypercalcemia associated with malignancy