Masculex also contains extracts of Muira puama, Mexican damiana, and Ginkgo biloba. Men have used these herbs for centuries to round out a healthful diet. These botanicals provide biological compounds such as beta-sitosterol and other natural sterols, fatty acids, alkaloids, and flavonoids. Scientists are studying the value these compounds have for specific body functions. All the botanicals in Masculex are concentrated for the highest quality, consistency, and absorbability.