bodybuilding tirzepatide vs. Semaglutide: Which GLP-1 Better Preserves Muscle During Weight Loss? Bodybuilding to Obesity (~300lbs) to

I think it's not that the ingredients are that unique

Singh, L-carnitine supplementation attenuates intermittent hypoxia-induced oxidative stress and delays muscle fatigue in rats., Exp

A confirmed medical diagnosis, documented prescription history, and an injury that required treatment are the core qualifications

You can see this in other studies, where one study from 2022 6 showed improved performance in treadmill sprints, and another study 7 showed increased one-rep maxes in bench press and squat from those in the study

Protein also has a higher thermic effect of food (20-30% of calories consumed) compared to carbohydrates (5-10%) or fats (0-3%), meaning the body expends more energy digesting and metabolizing protein