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Ipamorelin is a synthetic peptide that stimulates the release of growth hormone from the pituitary gland

Is BPC-157 tested by Janoshik

Color reflects that evidence, amber for a real but limited or non-brain signal, gray for little, untested, or no measured effect

also has a research collaboration on coeliac disease with Takeda

Conditions like pernicious anaemia (an autoimmune condition affecting a protein called intrinsic factor vital for B12 absorption), stomach issues (such as from reduced stomach acid or certain medications like proton pump inhibitors), intestinal disorders (like Crohns disease or coeliac disease), or even surgical removal of parts of the small intestine (e.g., gastric bypass surgery) can prevent proper absorption

For scientific details, the Vitamin B12 Fact Sheet from NIH is a great resource