<p>The use of Calcium supplements has rarely given rise to mild gastrointestinal disturbances, such as constipation, flatulence, nausea, gastric pain and diarrhoea. Following administration of Vitamin-D supplements occasional skin rash has been reported. Hypercalciuria, and in rare cases hypercalcaemia have been seen in long-term treatment with Vitamin-D at high doses.</p>