Could chronic oral exposure change long-term safety profiles
Oral GLP-1s for obesity saw a recent setback when in April (April 2025), Pfizer announced that it was discontinuing development of danuglipron, an oral GLP-1 receptor agonist, which was being investigated for chronic weight management, due to potential liver toxicity
doi: 10.1016/j.cell.2010.02.043 97 BacchiSPalumboPSpontaACoppolinoMF
BPC-157 is a gastric pentadecapeptide that supports tissue repair and gut integrity, while GLP-1 receptor agonists (semaglutide, tirzepatide, liraglutide) drive appetite suppression and metabolic improvement
Tryptophan and arginine have become effective targets of tumor immunotherapy (amino acids contributing to tumor immunity are addressed in section Amino Acid Metabolism and Tumor Immunity)
Additionally, the RDA for selenium is slightly higher for lactating women (from 60 to 70 g/day), and selenium content in breast milk reflects maternal intake (232)