People who eat animal products can still obtain B12 through their diet but it is harder for vegetarians and vegans
Zhao, H.-M
Biomarkers of nutrition for development (BOND)-iron review

Benefits of Growth Hormone Stimulating Peptide Therapy Include: Increases in muscle mass Reduces abdominal and body fat Elevates energy level Enhances sexual performance, better results with sexual performance treatments Optimizes cardiac output Improves performance and endurance Superior immune function Increased exercise performance Lowered blood pressure Improves mood Strengthens bones Speeds recovery and wound healing Allows for skin to look younger, tighter, and thicker Improves sleep Promotes hair growth Reduces cellulite Sharpens vision Increases memory retention Supports regrowth of heart, liver, spleen, kidneys, and other organs that shrink with age Reduces joint pain Improves cholesterol profile, with higher HDL and lower LDL Decreases wrinkles and fine lines Improve mental focus Increases sex drive and performance Produces healthier skin, nails, and hair Decreases brain fog Growth Hormone Replacement Peptide Therapy Programs and Costs Dr

The compounds give researchers options to study different cellular pathways, allowing for more comprehensive studies that can give us a better understanding of metabolic mechanisms
BPC-157 is a synthetic 15-amino-acid peptide (MW 1,419.5 g/mol, CAS 137525-51-0) derived from a gastric-juice protein