Quest Super Once A Day is an everyday supplement to support optimal well being. It contains nutrients that contribute to the reduction of tiredness and fatigue. including Folic Acid, Iron, Magnesium, Niacin (B3), Pantothenic acid, Riboflavin (B2), Vitamin B12, Vitamin B6, Vitamin C. This is a high potency "all-in-one" formula, providing 17 vitamin and vitamin-related ingredients, 12 minerals and 12 additional factors to augment dietary intake where needed. The minerals are chelated to a blend of amino acids to maximise absorption. Contains a gentle form of 'iron' which is less likely to cause constipation or digestive discomfort. This patented timed-release tablet is designed to release nutrients over 6 hours and optimise absorption of water-soluble vitamins.