Prairie Naturals Vigor Force - A potent formula to help increase sexual energy and stimulate desire. Vigor Force contains a unique blend of herbal ingredients that not 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, Rhodiola Rosea, Pumpkin Seed Extract, Saw Palmetto, Ginkgo Biloba, Panax Ginseng and others. If your sex life is in need of more "vigor", try Vigor Force from Prairie Naturals.