Co-Q10 is a natural, vitamin-like nutrient that promotes heart and overall health. Jarrow Formulas Co-Q10 utilizes premium Japanese Co-Q10 produced via fermentation. Customer insistence on this superior form of Co-Q10 has all but pushed inferior Chinese product off the market. However, to be sure you're getting the best Co-Q10 - especially in high-potency formulas - make sure you purchase a reputable brand like Jarrow Formulas. Be sure to take Jarrow Co-Q10 with fish oil or a meal since fat helps you absorb this expensive nutrient.