We also use the provamel rice milk with added calcium. My ds2, who is allergic to dairy, eggs, nuts & wheat is on a prescribed calcium supplement. This wasn't done lightly though, I had to keep a food diary for a week and the dietician then ran it through a computer which worked out all his levels, vit c, zinc, vit b calcium etc. The problem with ds2 is that he is very fissy, has some sensory issues,especially when it comes to food. Calcium supplements are not the easiest of options as it can interfere with other meds and the side effects are not always wonderful. If you can get enough calcium inot her through diet alone, go for it!