Evacal D3 1500mg/400iu Chewable Tablets Evacal D3 1500mg/400iu Chewable Tablets are a calcium-vitamin D3 supplement that is used to prevent & treat a lack of calcium & vitamin D, particularly in the elderly, & support the treatment of osteoporosis (brittle bones). Evacal D3 1500mg/400iu Chewable Tablets can be taken at any time, with our without food, but should not be taken in the 2 hours before or after eating food containing high amounts of oxalic or phytic acid (found in spinach, rhubarb & wholegrain cereals). This is because they can reduce the amount of calcium you absorb in your bowel. Evacal D3 1500mg/400iu Chewable Tablets can be used during pregnancy & while breastfeeding under medical supervision. Pregnant women must not exceed 1 tablet per day (no more than a total daily intake of 1500mg of calcium & 600iu of vitamin D3).