There's one mechanism which I think is unique, which is the prolactin elevation, which sometimes occurs (Shimatsu & Hattori, 2012)
Ozempic is approved only for Type 2 diabetes, not weight loss
GLP-1 drugs target the GLP-1 trans-membrane receptor, which is one of a large family of G protein-coupled receptor (GPCR) proteins that straddle cell membranes and transduce chemical signals from outside the cell to its interior
Elkind-Hirsch KE, Chappell N, Seidemann E, Storment J, Bellanger D
For weight-loss evidence context, review Mayo Clinic information on B12 injections and weight loss
Selenium nanoparticles for biomedical applications: from development and characterization to therapeutics