The most common side effect is some soreness at the injection site, and you might notice your urine turning bright yellow (thats just the excess vitamins, particularly riboflavin, being excreted)
In the knockout mice, there was no significant decrease in body weight or lipolysis, thus indicating the importance of the beta-adrenergic pathways in weight loss
Depending on your health history and nutritional needs, your provider can help determine whether vitamin injections or oral supplements are the best option for you
Foods high in B12 include fish, meat, poultry, eggs, dairy produce, and foods that are fortified with B12 (like some breakfast cereals.) If you follow a restrictive diet or have a condition that impacts absorption, you could be at risk for a B12 deficiency
I hope you will find this brief review of the peptide landscape helpful