Today there’s a growing number of foods fortified with extra calcium. If you’re short on calcium, adding one or two of these foods can help. Examples are Nutri-Grain Bars with 200 mg, Viactiv Energy Fruit Smoothies with 300 mg, calcium-fortified citrus juices with 300 to 350 mg per glass, and Kellogg’s Special K Plus with 600 mg per bowl. To make sure you don’t overdo… 1. Add. Total up the calcium you get in a day by looking up the percent Daily Value for calcium of any food or supplement you have regularly. (To convert percent calcium to mg of calcium, drop the percent sign, and add a zero.)   2. Subtract. If you go over 2,500 mg on a regular basis (once in a while is fine), cut back. You probably need to eliminate a calcium-fortified food or supplement.