VERELST CLINIC, Testosterone Replacement Therapy Alternative, BOOST your natural testosterone production  without any injections or exogenous testosterone. In our treatment, we use a combined ingredient mix that has many benefits over traditional TRT. The major benefits are that it stimulates increased natural testosterone production and, unlike testosterone injections, it increases fertility. It is easy to stop the therapy at any time, you just go back to the same testosterone levels you had when you started the therapy, and unlike exogenously administered testosterone, there is no shrinking of the testes because the testes keep producing testosterone.