greg doucette bpc 157 BPC-157 & TB500 Healed Me… I’m Competing Again Greg Doucette – Bio, Birthday,

[1] Because intrinsic-factor-dependent uptake in the distal ileum can be absent in conditions such as autoimmune gastritis, pancreatic insufficiency, or bariatric surgery, the intramuscular or subcutaneous route bypasses gastrointestinal barriers and reliably restores serum concentrations

Concentration affects injection volume but not peptide effectiveness per milligram

The needle creates minor tissue trauma

In 2012 and 2017, Shimu passed GMP inspection routinely by China Ministry of Agriculture

A scoping review in Cureus (2025) added important context: dual-acting agonists like tirzepatide which targets both GLP-1 and GIP receptors produced greater reductions in weight and insulin sensitivity than GLP-1-only agents