Overview Atenolol for the Prevention of Osteoporosis (APO) Status: Recruiting Trial end date: 2025-01-20 Target enrollment: Participant gender: Summary Evaluate whether treatment with a widely used beta blocker, atenolol, will prevent bone loss at the lower back and hip in postmenopausal women. Phase: Phase 3 Details Lead Sponsor: Sundeep Khosla, M.D.Collaborators: Columbia UniversityMaineHealthUniversity of California, San FranciscoTreatments: Atenolol