The promising effects observed in vitro often require sophisticated formulations (e.g., with piperine, nanoparticles) to be partially translated in humans, raising questions about the efficacy of simple dietary intake or standard extracts (50)
L-carnitine is a metabolic compound with no controlled substance classification
Over time, the skin begins to show signs of ageing due to exposure to pollutants, sun damage, and the natural ageing process
Purpose: Therapeutic dose range
Secondary outcomes were cardiometabolic risk factors (e.g., fasting glucose, total cholesterol, high-density lipoprotein, systolic blood pressure, triglycerides, and waist circumference) and adverse effects