I have been taking calcichew for several years and have had no problems with them [ I take one a day ] I had a bone scan recently which revealed my bone density had improved since my last one 2 years ago, so no treatment required, however I continued to take them. My question is can too much calcium cause intense all over itching which I have. [ my calcium levels are within range ] I have stopped taking them for a few days and the itching has greatly improved !!!