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Furthermore, combinations of [3 Gly : 1 Pro : 1 Hyp], [1 Gly : 3 Pro : 1 Hyp], or [1 Gly : 1 Pro : 3 Hyp] showed similar longevity, which the individual contribution of each amino acid can not explain and suggests that a 3 to 1 to 1 ratio for any of these amino acids might elicit this beneficial response

In the pancreas, GLP-1 receptor activation promotes insulin secretion and reduces glucagon secretion in a glucose-dependent manner

doi:10.1038/s41419-018-0692-9

But Sam Torbati, M.D., the co-chair of Emergency Medicine at Cedars-Sinai Medical Center wrote in a blog that most of the feel-good benefits of an IV vitamin drip come from the boost in hydration, specifically water and salt, not the nutrients