Impotence and low sex drive are common concerns for many men over the age of forty. Prairie Naturals has designed a potent formula to help increase sexual energy and stimulate desire. Vigor-Force contains a unique blend of herbal ingredients that no only help promote endurance and enhance performance but also protect and strengthen the male reproductive system including prostate. Containing popular male herbals such as Bulgarian Tribulus, Muira Puama Root Extract, Pumpkin Seed Extract, Saw Palmetto Berry, Ginkgo Biloba, Siberian Ginseng and others. If you sex life is in need of more "vigor", try Vigor-Force from Prairie Naturals!