I would agree with most of the postings regarding controlling nosebleeds. Direct pressure is almost always the best method of controlling bleeding. Pinching the soft tissues of the nose and applying cool compresses to the area will generally be sufficient. Frequent or uncontrolled bleeding should definitely be addressed by a medical professional. Several of the items posted, are somewhat debatable. The coating of the nasal passage with Vaseline should be under the direction of Physician, petroleum jelly, if aspirated into the lungs can lead to aspiration pneumonia. While it may not be likely that enough would be aspirated, there is little reason to take a chance. Another issue is putting the head back, and allowing the blood to flow into the throat, most first aid instructions recommend sitting the person down and placing the head between the knees to prevent blood from being swallowed. Blood is very irritating to the stomach and can cause nausea. Pete