TestroVax contains a key compound clinically shown to kickstart your body's own testosterone production. It's hormone-free and has been shown to increase serum testosterone levels up to 42% in as little as 12 days with just 1 serving per day. Why does increasing testosterone naturally matter? Testosterone is key to maintaining energy, performance, muscle, and drive. With age, testosterone production naturally drops, and lower T-levels can affect your overall performance. TestroVax is formulated to combat lower T-levels by increasing your body's own testosterone production.