It's also important to remember that if you have Leber's disease, a specific type of B12 called cyanocobalamin could be harmful to your optic nerve
They benefit people who have mild B12 shortages, feel tired because of a poor diet, or need daily nutritional help
In terms of weight loss, if you have a vitamin B12 deficiency, which is likely, you will lose some of the vitamin B12 shot in the first 48 hours, but at least 50% of it will be stored in your liver
The 2024 NICE guideline NG239 sets out a more intensive loading schedule for patients with neurological involvement precisely because their starting point is worse
Both scenarios are valid depending on the underlying health context
Furthermore , it ensures your nervous system works as it should