Social & Preventive Medicine RDA, Nutritional Requirements b3a28e55 Daily Calcium requirement of infants is:- A 300 mg B 500 mg C 600 mg D 1200 mg High-Yield Explanation Calcium requirement:- Man - 600 mg/day Woman - 600 mg/day Pregnancy - 1200 mg/day Lactation - 1200 mg/day Infants - 500 mg/day.