Lie down and pinch your nostrils shut. A. Vitamin C is required to form collagen, the connective tissue protein that keeps the walls of blood vessels intact. If you have chronic nosebleeds, consider increasing your daily vitamin C consumption and avoid blood-thinners such as aspirin. Overuse of nose sprays promotes nosebleeds. All of these groups tend to get nosebleeds more frequently than the general population.
Children are more prone to colds, infections and allergies, all of which contribute to nosebleeds.
Smoking dries out nasal passages. And high blood pressure puts more pressure on the blood vessels. B. Sit or stand upright and pinch the bridge of your nose for 15 to 30 minutes. This direct pressure should stop most nosebleeds within a half-hour. A cold compress helps narrow the capillaries and reduce the bleeding.