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The safety profile is very favorable , no effect on insulin, IGF-1, cortisol, growth hormones

The best way to avoid the potential side effects of too much vitamin B12 is to get the majority of your vitamin B12 from nutrient-rich food sources, including meat, poultry, seafood and dairy products

Vitamin B12, also known as cobalamin, is an essential water-soluble vitamin that plays a vital role in many bodily functions including DNA, red blood cells, and nerve cell production

"Glucose-dependent insulinotropic polypeptide: from discovery to clinical application." Endocrine Reviews, vol