4-in-1 Calcium 1000mg with Vitamin D3 – Calcium Supplement for Women and Men with Vitamin K2 D3 1000 IU – Extra Strength Calcium Citrate for Bone and Heart Support (120ct)

Customers find the calcium supplement effective, with one mentioning it helps protect against osteoporosis. The nutritional content receives positive feedback for its balanced facts and vitamin D content. However, the pill size is too large for many customers, and there are mixed experiences with digestive effects, with some reporting stomach rumbling.