It is legal to possess in the U.S
Currently, allopathic (versus functional medicine) Crohns disease treatment, for example- starts off with with brain and gut damaging corticosteroids and 5-aminosalicylic acid products, adds immunomodulators (Azathioprine, 6-mercaptopurine, methotrexate), and eventually, biological agents which are TNF-alpha inhibitors (infliximab, adalimumab, certolizumab, and golimumab)
Clin Case Rep 2023;11:e7770
An individual should inform their doctor about the medicines they are taking as cyanocobalamin also interacts with certain prescription and OTC medications such as amoxicillin, erythromycin, methotrexate, and pyrimethamine
NAD+ IV therapy involves the intravenous administration of nicotinamide adenine dinucleotide (NAD+), a coenzyme found in all living cells