I'm gonna be answering all those questions for you guys because I've done both
Insulin, the very first lab-made peptide, signaled the launch of modern peptide therapeutics in 1921
Additionally, the BPC 157 can be taken as a capsule, as oral dosages are much more appropriate for treating stomach, intestinal, and gut problems such as IBS
pmid:12958120 7
PubMed abstract High rates of severe hypoglycemia among African American patients with diabetes: the surveillance, prevention, and Management of Diabetes Mellitus (SUPREME-DM) network Authors: Karter AJ
J Transl Med 18:100 Lin T-N, Cheung W-M, Wu J-S, Chen J-J, Lin H, Chen J-J, Liou J-Y, Shyue S-K, Wu KK (2006) 15d-prostaglandin J2 protects brain from ischemia-reperfusion injury