Can excessive b12 cause bleeding gums?

No: Excessive intake of vitamin B12 may cause numbness and tingling of had and feet. Other studies seem to indicate that excessive intake of vitamin B12 may cause certain malignancies.

No: Vitamin B12 is water soluble and therefore any excess intake is excreted in your urine unlike fat soluble vitamins such as a, d, e and k. See you dentist for another cause of your bleeding gums. The most common cause of bleeding gums is plaque and calculus deposits on teeth which need to be removed.