How much vitamin C can I take a day?

For adults, the daily upper limit of vitamin C is 2,000 mg. For teens, it's 1,800 mg. For children, the upper limit depends on age, and it ranges from 400 to 1,200 mg per day. In addition, vitamin C is water-soluble, making it hard for your body to store it — with excess being secreted in your urine.16
How much vitamin C can I take a day?