Bleeding gums can be treated with metronidazole anti-inflammatory medication or vitamin C. But these may relieve the symptoms and not cure the root cause. The common cause of bleeding gums is apical inflammation of teeth or gingivitis. If the tooth decay is not treated in time, the bacteria infect the tooth nerve and the pulp tissue becomes septic and necrotic, and the inflammation gathers in the apical area, and if there is no root canal treatment, the inflammation is not effectively drained, it will break through the mucous membrane and form gum abscess, and the symptoms of gum bleeding will appear. This situation requires timely root canal treatment to completely remove the infected material in the root canal, followed by a tight root canal filling. Most of the bacteria in the root canal are Streptococcus pyogenes, which are oral anaerobic bacteria. Metronidazole has a good effect on anaerobic bacteria, so you can take oral metronidazole for treatment. Bleeding gums may also be caused by gingivitis. If you do not brush and rinse your teeth in time after eating, food residue or soft scale will accumulate around your teeth and the gum tissue will be in a state of congestion, which will lead to bleeding gums over time. You can take vitamin C to help the absorption of iron and improve the bleeding gums. Therefore, you can take metronidazole to eliminate anaerobic bacteria and control the inflammation in the apical area, and you can also take oral vitamin C to improve the bleeding gums. However, the main way is to seek timely consultation and take treatment measures such as scaling for the cause to completely eliminate and cure bleeding gums.