Vitamin C in foods have not been shown to cause any of the problems of synthetic supplement use. (philmaffetone.com)
Where this brand could be improved is in the use of fresh fruits and vegetables as natural sources for key nutrients, though they do use synthetic supplements to ensure nutritional balance. (kittycatter.com)
So you won't find long lists of synthetic supplements in any of our foods - only zinc is added. (amazon.com)