Aizen Power Male Enhancement is a Japanese firm that has some interesting technology on its site. When it comes to male enhancement products, however, Aizen tends to get left in the dust. I grabbed a few cans of these and gave them a shot. What did I find? Not too shabby. These things are sold in stores for about $13 a pop. If you're looking for an endocrine tonic, I'd say these are pretty good values for the money.