There are also certain drugs and health conditions that can increase the likelihood of developing a B12 deficiency such as: alcohol abuse, antacid use, smoking, celiac disease, other digestive concerns, pregnancy, a strict vegetarian or vegan diet, and even natural aging
In practice, a researcher selecting between them is usually choosing which mechanistic question to probe: vascular and cytoprotective signaling points toward BPC-157, while questions dominated by cell migration and cytoskeletal dynamics point toward TB-500
A core concept you need to understand is blood alcohol concentration (BAC)
GHK-Cu increased production of nerve growth factor (NGF), neurotrophin-3 (NT-3), and neurotrophin-4 (NT-4), sped up regeneration of nerve fibers from nerve stubs, and increased axon count and proliferation of Schwann cells compared to controls