Caffeine Consumption Similarly, caffeine can reduce vitamin and mineral absorption
Guideline 5: Safety Considerations and Managing Side Effects Its important to give Vitamin B12 injections safely to get the best results and avoid risks
25 July 2026
H 2 -receptor antagonist examples include cimetidine, famotidine, nizatidine, and ranitidine
22 , 23 , 56 Treatments such as antibiotics, proton pump inhibitor medications, antihyperglycemic medicines (eg, metformin), nitrous oxide anesthesia, a nonsteroidal anti-inflammatory drug, some anticonvulsants, and colchicine interfere with B 12 absorption and metabolism