TestoJack 100 contains a powerful standardized extract of Eurycoma longifolia, commonly known as Tongkat Ali or Long Jack. LJ100 contains bioactive Eurypeptides, the active constituents of Tongkat Ali. Clinical and non-clinical tests suggest that Tongkat Ali extracts may support healthy testosterone levels. TestoJack 100 also contains ZMA, a synergistic combination of zinc and magnesium for the support of healthy immune and neuromuscular function.* This combination of ingredients in TestoJack 100 helps promote enhanced energy levels as well as overall support for men's health.