naaah!...if you have healthy gums you do not need extra vitamin C.
If you have bleeding gums AND are Vitamin C deficient then yes, Vit C would be helpful......BUT.........Vitamin C defy as a cause of bleeding gums is well down the list of causes....
If you are deficient in vitamin C you'll have other symptoms as well such as skin flaking (scurvy), so don't waste your money on it.
Instead invest in some interdental brushes, tape floss and an anti-plaque mouthwash and use all of above religiously twice a day, no cheating.
It will definitely make a difference to your gums.
Many Thanks to You All and Mosaic, all the utensils you mention are being used and Sqad, I believe you are or have been a medical person, so your knowledge is invaluable. Thanks Again.