You can get vitamin B12 from sources like meat, fish, eggs and dairy products
For more in depth information on potential side effects, read this article from WebMD
What does a B12 shot do for you
No Observed Effects On: Blood glucose or insulin sensitivity (no diabetogenic effects) IGF-1 levels (remained within normal ranges) Blood pressure or cardiovascular parameters Thyroid function Liver or kidney function markers Important: The absence of growth hormone-related side effects distinguishes AOD-9604 from full-length GH, which can cause fluid retention, joint pain, carpal tunnel syndrome, and insulin resistance
Understanding the Benefits Losing weight is never just about willpower
For a lot of people, the change shows up somewhere in the first one to three days