Alpha Male is a product that will increase natural production of Testosterone and levels of free testosterone. The Eurycoma also has a positive effect on the metabolic tissues associated with sex function, so you may also see an added benefit in that area as well.
I have had people ask "well will Alpha Male add muscle on me?" and I tell them that it will increase Testosterone. With increase of the male hormone Testosterone if you are doing your part right eating, lifting, resting, it can put stimulate gains in lean muscle mass, dropping body fat, increasing energy and mood, as well as increasing sex drive.
The Vitex will also help if estrogen levels are high and also helps to create a better environment for Testosterone production. So, if you are coming off of a prohormone cycle it would be a great product to use or in general if you want the benefits of having your testosterone production as well as levels of free Test at peak levels.