Abstract: Natrium Fluoride (NF) is one of the best treatments of osteoporosis because it is cheap, it has no major side effects, and it is effective (Heany et al., Farley et al., Dure-Smith et al., Kanis et al., and Pak et al.). Our work is a prospective open study to demonstrate the efficacy of low dose NF (20 mg daily) in post menopausal osteoporosis. Fifty six patients with osteoporosis (t score less ...