Calcimax K2 Tablet is used to treat post-menopausal osteoporosis (weak and brittle bones). Postmenopause is a condition in which women have not had a period for 12 months or longer. Osteoporosis is a bone disease that weakens and thins bones by decreasing bone density, which is common in post-menopausal women. As the density of bones decreases, they weaken and are more likely to break.