More serious risks include pancreatitis, gallbladder disease, acute kidney injury, and a boxed warning for thyroid C-cell tumors (with a contraindication in patients with personal/family history of MTC or MEN2)
Because both forms touch basic energy and neuronal pathways, it makes biological sense that some users might notice changes in how they feel after starting supplementation
References [1] Zhou Y, Fu X, Zhou G, Jia B, Fang Y, Hou Y, et al
Eating protein and/or fat together with dietary fiber before carbohydrate is most effective at enhancing GLP-1 secretion
Athletes should always take the advice of a trained sports nutritionist or dietitian to help decide what supplements best meet their needs, body types, sporting activity, etc