It is normal to have light green stools. The reasons are: 1, the influence of food color; 2, drug influence (although for so many years, I really didn't pay attention to what color vc tablets are); 3. Bilirubin (bile product-the yellow stool of normal people is the color of bile-related substances) is oxidized into biliverdin-don't worry.
< New Pharmacology >: People's Health Publishing House, 14, pp. 476-477: Vitamin C is white crystalline powder; Vitamin c obtained from fresh vegetables and fruits every day can generally meet the daily needs of normal people; The preparation cannot be used after the color turns yellow. Of course, your vc drugs are generally no problem. It may contain other ingredients (such as flavoring agents) that cause the stool to turn green. But in any case, I don't think it is necessary to take medicine to supplement nutrition unless it is absolutely necessary for treatment.