<prompt> Osteoporosis is caused by all except -MethotrexateGlucocoicoidsHeparinEstradiol  <response>: Medications causing osteoporosis are : Aluminum in antacids Anticoagulants heparin Anticonvulsants Aromatase inhibitors Barbiturates Cancer chemotherapeutic drugs Cyclosporine A and tacrolimus Depo-medroxyprogesterone premenopausal contraception Glucocoicoids 5 mgd prednisone or equivalent for 3 months Gonadotropin-releasing hormone antagonists and agonists Lithium Methotrexate Proton pump inhibitors Selective serotonin reuptake inhibitors Tamoxifen premenopausal use Thiazolidinediones such as pioglitazone and rosiglitazone Thyroid hormones in excess Parenteral nutrition Reference : page 2490 Harrisons Principles of Internal Medicine 19th edition 