Calcium can help to build strong bones and teeth, regulates muscles contractions and can make sure that blood clots normally. Calcium can be found in many foods including dairy products. You should be able to get all the calcium you need with a varied and balanced diet, however there are a range of calcium supplements which can help you meet your daily intake. Please note you should not take supplements as a substitute for a varied balanced diet or a healthy lifestyle. Always read the label. Ask your local pharmacist for advice.