Annie, 2000 mg calcium on daily basis is very dangerous and may cause heart failure! Unless you are taking calcium with manganese in 2:1 ration respectively, it can cause serious troubles, and also that much manganese would also be not recommended. I recommend you to take 500 MG calcium daily with 250 MG manganese and also at least two tablets of VITAMIN D (around 500-1000 IU).
Dharmesh, I'm also taking rocaltrol since past 3 years, any idea how much exact IU one tablet of it contains? I had a look at it's wrapper long ago, but they mentioned some other units or rather was not clear, let me know if possible. Thank you.