What Are Liquid L-Carnitine Capsules? L’Carnitine 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 L’Carnitine per serving, so you can supplement your levels on-the-go. It’s never been easier to support your fitness goals. Why Use Liquid L-Carnitine Capsules? Myvitamins L’Carnitine Capsules contain a unique liquid formula and are great for supporting your L’Carnitine levels on a busy schedule. L’Carnitine 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.