My doctor said to take vitamin D3 (5,000IU) because it helps the absorbtion of the calcium, which I also take.
He also said to take Vitamin K2 for the same reason.
These are taken daily. Since women have a problem with osteoporosis these will help our body to absorb more of the calcium. A urine test will show how much your body is absorbing and how much is being lost in urine.