Frontiers The effects of L carnitine supplementation on glycemic markers in adults: A systematic review and dose response meta analysis Carnitine supplementation improves metabolic flexibility and skeletal muscle acetylcarnitine formation in volunteers with impaired glucose tolerance: A randomised controlled trial eBioMedicine Combining Berberine and L Carnitine can be beneficial for weight management, metabolism, and overall health. Berberine may improve insulin sensitivity, lower blood sugar, and support weight loss, while L carnitine helps the body use The glycemic, cholesterol, and weight effects of L carnitine in diabetes: A systematic review and meta analysis of randomized controlled trials ScienceDirect Carnitine Deficiency: What Is It, Causes, Symptoms, and More Osmosis