GLP-1 receptor agonists like Wegovy and Saxenda and dual GLP-1/GIP drugs like Zepbound have produced some of the most impressive weight-loss results, Dr
Together this phenomenon is collectively referred to as the gray market. This gray market is not subject to the quality control regulations that govern the pharmaceutical industry, and testing conducted on a range of peptides including MOTS-c, BPC-157, TB-500, and CJC-1295 by The New Yorker in April showed that many were impure or contained less than the advertised dose
: in vitro, in vivo , BPC-157 ( ) ,
As SeniorSite synthesized in its July 2026 review of the current evidence: older adults should have a baseline DEXA scan to establish bone and lean mass before starting, a protein target of at least 1.2 to 1.6 grams per kilogram of body weight per day (substantially higher than the standard 0.8g/kg guidance), resistance training incorporated as a non-optional companion to drug therapy, and a slower dose escalation than standard protocols to reduce the rate of weight loss and minimize lean mass sacrifice