I just have a quick tip for you today… if you are taking a calcium supplement, it may be a good idea to take some magnesium as well. If you have been taking calcium for a while, you may have noticed one of it’s unpleasant side effects - something that’s usually not talked about… You’re going to have a hard time using the bathroom.
Taking a magnesium supplement alongside your calcium will help soften your stool and makes it easier to stick to taking your calcium on a regular basis. If you are getting your calcium through nutrition, you should be getting enough magnesium to avoid this problem, unless of course you’re mainly eating cheese 
Once again, a balanced diet that includes dairy, whole grain and plenty of fresh vegetables is probably your best option, but adding some extra calcium, especially if you’re at risk for osteoporosis is still a good idea.
March 18th, 2008 at 11:11 am
This is a great tip of course that everybody should now, but also if you look properly you should be able to get a calcium supplement with the perfect ratio of calcium to magnesium so you do not have go to the trouble of taking to different supplements. One good supplement should be the only one around, you just have to remember to take a closer look at what is in your calcium supplement. Listed below is whats goes into the supplement I am taking and is a pretty good general idea of what you want in your daily supplement.
Amount Per Serving %D.V.*
Vitamin D3 (Cholecalciferol) 1600 IU 400%
Vitamin K2 (as MK-7) 100 mcg **
Calcium (from Algas Calcareas) 720 mg 72%
Magnesium (from Algas Calcareas) 350 mg 54%
Trace Minerals (from Algas Calcareas) 1464 mg **
Boron (FruiteX B® Calcium Fructoborate) 3 mg **
Vitamin C (calcium ascorbate) 50 mg 80%