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Francesco Puppi, recent podium finisher of the Western States 100, wrote a thoughtful piece about the state of drug testing in ultras following the high profile test failure of Joyline Chepngeno in 2025
Certificates of analysis confirm peptide quality regardless of minor appearance differences
Kidney Overload : It is unusual for a persons kidney function to be affected by a high protein intakeas with collagen supplements, because of pre-existing kidney issues
Glucagon-like peptide-1 receptor agonists (GLP-1 RAs) Semaglutide and tirzepatide are examples of GLP-1 RAs, a category of peptides originally developed for diabetes management but found to promote weight loss through their actions on the pancreas and digestion
doi:10.1074/jbc.R113.458810
Both are active areas of clinical research, and the responsible position is to treat them as supervised wellness therapies rather than guaranteed cures
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