My doctor advised me that she would recommend AS over legal hormone boosters and creatine. She said that AS are regulated more in their production then are legal supplements. She does not recommend either, but since I have goals that I will meet she gave me her advice. On the other hand she strongly advises injectable AS over supplements, but oral AS are the most harmful (of course) then the other options. I understand that companys produce their products under different levels of standards with both AS and supplements. Is there advice that anyone else could add to this subject or is there any specific company that you recommend for their quality regulations?