Look for suppliers providing: third-party HPLC/MS testing results, certificates of analysis showing 95%+ purity, proper sterile manufacturing documentation, appropriate storage and shipping protocols, and detailed reconstitution instructions
They are known to reduce amyloid-beta accumulation, suppress tau hyperphosphorylation, improve cerebrovascular integrity, and lower systemic inflammation. These effects are not only theoretical
While you wait, tighten lifestyle habits so momentum snowballs once the full dose hits
However, this model has come into question, as evidence demonstrating local, intra-islet GLP-1 production has advanced the competing hypothesis that the incretin activity of GLP-1 may reflect paracrine signaling of GLP-1 from alpha-cells on GLP-1Rs on beta-cells
Marks 2020
Combining it with peptides that target entirely different pathways (BPC-157 for injury recovery, growth hormone secretagogues for muscle preservation) is a different matter and is discussed in community protocols