As of April 2026, the FDA formally proposed - in a Federal Register notice - removing semaglutide, tirzepatide, and liraglutide from the 503B outsourcing bulks list
Mechanisms: Its ability to support microvascular integrity, enhance fibroblast migration, and reduce oxidative stress facilitates recovery across muscle, tendon, ligament, nerve, gastrointestinal lining, and skin
Glutathione is one of the most abundant and potent intracellular antioxidants
Boost Healing
However, re-expression of LepRb in PPG neurons did not restore normal plus maze performance, suggesting leptin signaling in PPG neurons alone is not sufficient to restore normal behavioral responses