Well, you can't call, but you can buy a product called Emergen-C or its generic equivalent. My SIL stirs up a glass of the fizzy mixture in water a couple of times of day when she feels the need for a Vitamin C boost.
Here is a great review of the product where the reviewer says, in part:
... so I began the regimen: One Emergen-C at 5 am. Another once I woke up (again) at 8. Another when I got to work, two more after lunch. In all, I think I must have had six or seven packets of that goodness yesterday—probably not a dosage you want to subject your body to every day, but these were trying times.It is now not quite 5 AM, and I have downed one dose of the Walgreen variety in cranberry flavor, am on my second cup of coffee, and actually feeling better than I did yesterday at this time before the wonder product was in my system. (Yesterday I drank three of the packets with the recommended 6 oz of water and begged off obligations; in other words, so I could lie around and do nothing.)
Who knows, with 1,000 milligrams of vitamin C (1,667% of your recommended daily allowance) in each packet, maybe there is something to it. It can't hurt. And water is certainly good for you.