Any website or seller offering B12 vials without a prescription is breaking the law and, frankly, putting your health on the line
Some diets that have been utilized in the field include: paleo, keto, LCHF (low carb high fat), RAD (rare adipose disorder diet), and anti-inflammatory
One review concluded that vitamin B12 plays a key role in fat metabolism, noting that a deficiency could be linked to increased fat accumulation and obesity ( Another animal study found that severe vitamin B12 deficiency led to a significant increase in body fat percentage and cholesterol levels in pregnant mice ( Whats more, one animal study showed that administering B vitamins to rats fed a high fat diet reduced weight gain and increased levels of several enzymes that influence metabolism, compared with a control group ( However, current evidence is lacking, and additional high quality studies are needed to determine how vitamin B12 may affect metabolism and body fat in humans
Additional scientific literature on sterile laboratory solutions and antimicrobial preservatives can be explored through publicly available databases such as PubMed