It can speed up muscle growth, fat loss, and recovery, but it bypasses the bodys natural endocrine regulation, which may increase the risk of side effects like insulin resistance, fluid retention, and joint pain
Med Sci Monit 17:677682 Remington R, Bechtel C, Larsen D, Samar A, Doshanjh L, Fishman P, Luo Y, Smyers K, Page R, Morrell C, Shea TB (2015) A phase II Randomized clinical trial of a nutritional formulation for cognition and mood in Alzheimer's disease
Testosterone addresses some but not all components of sexual desire
If you don't see anything by week 8, the dose is likely too low or the sourcing is suspect