... name: Tribulus P.E.Molecular Formula: C33H40O15Molecular Mass: 1049.199CAS No: 55056-80-9 Function: Immunity enhancer , muscle enhancer, ... hand, one recent study found that T. Terrestris caused no increase in testosterone or LH in young men, [9] ... containing androstenedione and herbal extracts, including T. Terrestris, was no more effective at raising testosterone levels than and rostenedione alone ...