**CALCIUM: Benefits, Side Effects, Uses, Dosage, Warnings?** Other names: Ca acetate (calcium), aspartate, carbonate, chelate, chloride, citrate, malate citrate, gluconate, lactate, lactogluconate of, orotate, phosphate, dolomite powder bone, ground oyster shells. Calcium supplements do they increase the ... several large tablets). They are also recommended for people who take medications that reduce stomach acid. Calcium citrate contains about 20% elemental calcium.