This is the most plausible explanation for why retatrutide's Phase 2 weight-loss readouts (up to 24.2% at 48 weeks) sit above comparable tirzepatide and semaglutide datasets [3][11]
Whitfield et al., 2015
When they are, ATP production runs more consistently, which directly supports endurance, power output, and the ability to sustain effort across a training block
For patients with high risk of developing NAION (eg, those with diabetes or hypertension) who are taking GLP-1 receptor agonists, ophthalmologists may increase vigilance. The researchers concluded that further research is warranted to replicate these findings, explore underlying mechanisms, identify individuals at increased risk for these potential complications and examine other eye disorders. Diabetic retinopathy In another analysis, David J
It also supports weight loss and is essential for all bodily functions
Some research suggests L-carnitine may help preserve lean muscle mass during calorie restriction, though more studies are needed