Your intestines can only absorb so much calcium at a time, which is why we recommend spreading the calcium throughout the day. When you are down to two pills daily, you can take these together and this can be done at any time of the day. But when on 4 or more pills per day, spread them out during the day.
Should I get up during the night?
No, it is not necessary to wake up in the night to take your calcium pills. It takes the body 4-5 hours to completely absorb a calcium pill. The pill you take now is still in your intestines for hours. So save one of your calcium pills for bedtime.