The products are only available to institutions or individuals that are associated with research or laboratory activities.
As a doctor, theres a lot of burden on your shoulders when you are prescribing something with insufficient evidence, but the patients insist on giving it a try. With no formal approvals surrounding their use from regulatory bodies like the Drugs Controller General of India (DCGI), they are considered off-label treatments
Now, before you decide to stop taking supplements and cut down on anything rich in vitamin B12, such as fish, meat, poultry, eggs, and milk - you know, all the delicious things - remember that this is a small study, and there's not a whole lot to go on yet, except that vitamin B12 looks like an intriguing candidate for further research
people with malabsorption disorders such as inflammatory bowel diseases and celiac disease