What Are Liquid L-Carnitine Capsules? LCarnitine is a naturally occurring amino acid which is found in protein. Protein is an essential nutrient which supports the growth and maintenance of muscle mass. 1 Our Liquid L-Carnitine Capsules contain 1g of LCarnitine per serving, so you can supplement your levels on-the-go. Its never been easier to support your fitness goals. Why Use Liquid L-Carnitine Capsules? Myvitamins LCarnitine Capsules contain a unique liquid formula and are great for supporting your LCarnitine levels on a busy schedule. LCarnitine is most commonly found in red meat and dairy products. Myvitamins Liquid L-Carnitine Capsules are vegan-friendly, making them a perfect plant-based addition to your fitness routine. References 1. Protein contributes to the growth and maintenance of muscle mass.