As someone who has spent years in drug development and scaleup, I see in them both the appeal of a clever receptor agonist and the red flags of a product that has largely escaped the discipline of proper clinical development and quality control
The predominant effective dose used in mouse studies is 25 nmol/kg
Alteration of several metabolic enzymes and pathways that affect KG abundance and KGDD activity have been reported in cancer, such as mutations of IDH1 and IDH2, changes in glutaminolysis that deplete KG, or alterations in fumarate hydratase (FH) and succinate dehydrogenase (SDH) that inhibit KGDD activity (Losman et al., 2020)
Key Takeaway: Combining a prescription GLP-1 with a potent metabolic supplement like berberine creates a stacking effect on your metabolism that requires professional monitoring
These exceptions must meet specific criteria as outlined in FDA guidance
However, clinical evidence comparing formulations remains limited