Well, I started taking this testosterone enananthate 300mg three weeks ago. I tried other brands and could not tell a difference, but these are the real thing. I can already tell a big difference in my energy, and how I feel alone with the stamina difference is really making things look up. I’m a 56-year-old male, and I'm looking forward to seeing the picture difference in a couple months or so, so don’t hesitate at all. So far, I'm impressed with the service. It took a second to answer your question, and they have the fastest shipping, so I am really impressed with that.