Dietary Supplement. Natural Amino Acid. Regulate Fat Metabolism. Enhance Immune System and Hormone Levels. Excellent Mood Enhancer. ALC 600 is much more efficiently absorbed form of L-Carnitine, a natural amino acid found in meats and dairy product. ALC plays a vital role in the metabolism of fats to energy. ALC is great for replenishing energy post workout. Studies have shown a positive impact on immune function, testosterone regulation, mood enhancement and mental alertness. Anti-aging studies have shown a significant increase in myocellular energy production and healthy cardiovascular function.