Interactions with Drugs
Vitamin B12 may interact with agents for bone loss, cancer, gout (colchicine), high blood pressure (angiotensin-converting enzyme inhibitors), and for stomach and intestine disorders (H2 blockers, proton pump inhibitors), agents that affect blood products, agents that affect the nervous system, alcohol, Alzheimer's agents, antibiotics (neomycin), anti-seizure agents, aspirin, bile acid sequestrants, birth control pills, cardiovascular agents, chloramphenicol, metformin, nicotine, nitrous oxide, para-aminosalicylic acid, stimulants, and zidovudine.
Interactions with Herbs and Dietary Supplements
Vitamin B12 may interact with herbs and supplements for bone loss, cancer, cholesterol, gout, high blood pressure, and for stomach and intestine disorders, herbs and supplements that affect blood products and that affect the nervous system, Alzheimer's herbs and supplements, antibacterials, anti-seizure herbs and supplements, birth control, cardiovascular herbs and supplements, folic acid, omega-3 fatty acids, potassium, salicylates, stimulants, tobacco, and vitamin C.
This evidence-based monograph was prepared by The Natural Standard Research Collaboration