Take Rutin, if you bruise easily, together with vitamin C with other biovlavanoids.
It strengthens your blood vessel walls, so that they don't burst easily. The capillaries are very fragile with some people, especially if you use stimulants.
The flavonoid rutin is an important nutritional supplement because of its ability to strengthen capillaries (Bilberry extract is particularly rich in Rutin).
Because Rutin improves capillary integrity (it works synergistically with vitamin C in this regard) by protecting and preserving the structure (permeability) and strength of those capillaries, this action is said to be of great help for capillary fragility (easy bruising and Bleeding) and venous insufficiency (Varicose veins and spider veins). The bioflavonoid, Rutin, is thought to lessen symptoms associated with prolonged Bleeding and help in cases of Bleeding gums and hemorrhage.
Rutin is a bioflavonoid, and it provides essential support molecules for vitamin C absorption (and should, in fact, be taken at the same time to gain maximum benefit). Rutin supplementation prevents the breakdown of vitamin C in the body before it is metabolized and intensifies its beneficial immune-enhancing effects in the body. Rutin is one of many bioflavonoids that are not actual vitamins in the strictest sense, sometimes being referred to as Vitamin P, and may be found in herbal plants, fruits, vegetables and nuts, etc., and because they cannot be manufactured by the body, they must be supplied through the diet. Bioflavonoids are a class of flavonoids that include rutin, hesperidin, quercetin, eriodictyl and citron, and they are essential for the absorption of vitamin C, which should be taken simultaneously, so they may act synergistically for maximum benefit.
However, since vit's work synergetically, you may als need to take vitamin E to avoid oxidation of Vit C.