Natural Sources to get calcium are from skim milk, nonfat yogurt, kale, cheeses, collard greens, canned salmon, and sardines with bones, mustard green, broccoli, figs, calcium-fortified orange juice, oats, prunes, asparagus, sesame seeds, soybeans, tofu, watercress and whey
Best if taken with- Boron, essential fatty acids, lysine, magnesium, manganese, phosphorus, vitamins A, C, D, and F, cobalt, folic acid, iron and zinc.
Deficiency Symptoms- Muscle Spasms, rickets, Osteomalacia, osteoporosis.
Toxicity Symptoms- Generally considered non-toxic. Calcium Supplements are not recommended for those with kidney disease or history of kidney stones.