Value Size With Powerful LJ100® LongjackAdvanced Pro-Male TestosteroneSupport Formula with Physical Peak-Performance BoosterDietary Supplements Testosterone is a male sex hormone that plays a key role in developing and maintaining masculine characteristics. It is known to promote vitality and wellbeing and is involved in mood, sex, drive, muscle mass and muscle strength. As men age, testosterone levels start to decline. Testosterone UP® is an advanced pro-male testosterone support formula that includes a physical peak-performance boosters that can help men of all ages. Boost Testosterone: This unique formula is designed to boost testosterone levels already within a normal range. At the center of this mechanism is LJ100® Longjack, a patented extract that preliminary research suggests, helps maintain testosterone levels already within the normal range. OptiZinc®, a patented form of zinc, is a trace mineral required for numerous vital cell functions, including growth and development as well as sexual health. Testosterone UP® has also been formulated to enhance performance and vitality in men. Ginseng extract is traditionally used as a tonic to revitalize the body. What makes us different: Liquid Soft-Gels - The nutrients in these easy-to-swallow Liquid Soft-Gels are released fast. Other forms of delivery can contain binders and fillers that may cause stomach upset and offer no nutritional value. Advanced Liquid Soft-Gels provide an optimum delivery system. Quality Assurance - Irwin Naturals® is committed to providing the highest quality products for your health. We employ compliance testing to ensure purity and potency. Patented Bioperine® - Our special BioPerine Complex enhances the bioavailability, absorption and potency of many nutrients.