i bough a super super cheap brand when i started my workout routine... im getting more now... it worked very well was like a kick in the balls got me energized and excited to workout the next day its called Testo-Rex... bought a months worth for like 9$ super cheap but actualy does QUITE the difference

lol im sure there probably is stronger stuff out there but hey for 9$ its awesome and definetly not a placebo lol