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The bottom line: peptides arent illegal, but they arent a free-for-all either

Last reviewed: July 16, 2026 Last updated: July 16, 2026 Written by: Jay Hastings, CEO of PlexusDx Jay Hastings is the CEO of PlexusDx, a precision health company focused on genetic testing, blood biomarker insights, and personalized wellness recommendations

10.1371/journal.pbio.0020377 PLoS Biol

The total human evidence base, as of this writing, consists of the following: 1) a Phase I safety trial of 42 healthy volunteers that was registered in 2015, canceled in 2016, and never published, 2) a retrospective case series of 12 patients with knee pain, no control group, and no validated outcome measure, and 3) a 2025 pilot safety study involving two healthy adults who received intravenous infusions at a single private clinic in Florida

Wipe the vials rubber stopper with an alcohol swab before inserting a needle

The most frequent sources of bias stemmed from variability in fasting protocols and the absence of blinding in gastric ultrasound assessments [5,15]