Question: what drugs cause low calcium levels?
Answer: Disorders that decrease calcium absorption. Pancreatitis. Certain drugs, including rifampin (an antibiotic), antiseizure drugs (such as phenytoin and phenobarbital), bisphosphonates (such as alendronate, ibandronate, risedronate, and zoledronic acid), calcitonin, chloroquine, corticosteroids, and plicamycin.