Ester C Chewable WHAT IS ESTER C CHEWABLE? Ester C is one of the most popular forms of vitamin C on the market and for good reason, studies have shown it is better absorbed than regular vitamin C (ascorbic acid) and remains in the body longer, up to 24 hours in fact. This means Ester C offers more pronounced antioxidant protection, as well as more robust support of the immune system. https://www.nationalnutrition.ca/vitamin-c-bioflavanoids/ester-c/ester-c-chewable.html #EsterCChewable