Berberine
Often called "nature's Ozempic" — a plant compound with genuine, researched effects on blood sugar and AMPK activation.
Berberine is a compound extracted from several plants (including barberry and goldenseal) with one of the better-researched mechanisms in the natural metabolic-support space. It activates AMPK, the same “metabolic master switch” pathway exercise activates, and has multiple clinical trials behind its effects on blood glucose and lipid markers.
It does not work the same way GLP-1 receptor agonists do — it doesn’t slow gastric emptying or act on GLP-1 receptors directly — but it’s one of the few nutraceuticals in this space with real trial data behind it, which is why it gets compared to metformin more often than to GLP-1 drugs specifically.