Gypsy, usually with calcium tablets you have to take two or three per day but recently at Doha Pharmacy in Villagio I found a bottle where it said one per day (1000mg). Typically women under 50 need 1000mg per day. Calcium is excreted from the body daily and if you don't put enough calcium in each day your body extracts it from your bones to put it in your blood. This can lead to osteoporosis (sp?). Make a point of doing weight-bearing exercise three times per week...walking, jogging, playing sports where you have to run around. I advise you to take a daily supplement and also try to eat non-dairy calcium rich foods such as tofu, dried figs, spinach, canned sardines with bones, french beans. As a matter of general well-being you should take a good quality multivitamin with minerals daily. I guarantee you're going to feel better being non-dairy.