I have run both on cyle formex is widly superior imo. Libido on formex is insane I cant get enough I mean ever, its crazy. Also ive noticed really strong pumps, it seems to free test in an insane way. Ive run all the ai's out there formex is by far the most comfortable and effective. My only complaint is that they make a bottle with more caps. I will include formex in all my natty supplementation it truly should be a staple. Thx IBE this product is worth the cash, I hope you can keep it around. Topical form just doesnt feel as strong or as consistant as formex.