The carnitine content in most dairy products ranged, approximately, between animal tissues and plant-derived food with concentrations ranging from 8 to 530 mg.
One study points out that 57–84% of L-carnitine is absorbed when it’s consumed from food, compared to only 14–18% when taken as a supplement.
L-carnitine for weight loss
Since L-carnitine has proven so effective in turning food and body fat into energy, it is natural to assume that it can help burn fat. That would then result in weight loss, something many people are always looking for.
A series of randomized control trials in 2016 confirms this, concluding that adults receiving carnitine ended up losing weight. Meanwhile, other clinical trials in 2020 concluded that supplementation resulted in a modest reducing effect on body weight, body mass index, and fat mass, especially among obese adults.
Still, the overall results of studies regarding L-carnitine and weight loss have been mixed. While it may aid in weight loss for older adults and those suffering from obesity, diet and exercise still need to be followed.
With its effectiveness in weight loss and as a popular supplement for athletes, L-carnitine may also help certain patients survive heart attacks, have less heart rhythm disturbances, and less chest pain.
Further research is needed regarding use of this supplement for people suffering from peripheral artery disease.