Synthetic parathyroid hormone, manufactured by Eli Lilly and sold in the United States under the brand name Forteo, is the only FDA approved osteoporosis drug shown to directly stimulate bone formation. (Other treatments work by interfering with the process of bone loss.) However, this medication requires administering a daily injection - something many osteoporosis patients are unwilling or even unable to do. And others who might benefit begin taking the medicine, but fail to complete the...