The main effect of alendronate sodium tablets is anti-osteoporosis, alendronate sodium tablets are all alendronate sodium preparation. This drug is a regulator of bone metabolism, can treat osteoporosis, the main role in the bone of hydroxyapatite, and the bone of hydroxyapatite is a very strong affinity, can inhibit osteoclasts for the dissolution of crystals, so that the drug is released at the same time can inhibit the activity of the osteoclasts.