Medical history, labs, and medications are reviewed
Carnitine is synthesized endogenously in the liver, kidney, and brain from the essential amino acids lysine and methionine, it is primarily stored in skeletal muscles
I think a lot of people are trying this
However oral bioavailability of berberine is considered poor (22) , and monacolin K in red yeast rice has statin-like side effects, prompting the continued search for other enhanced-bioavailability berberine/nutraceutical combinations (23)
It's not just one time deal
Choosing between them is mostly about how strong you want the signal to be, and how much of natural GH physiology you want to preserve in the process