I’ve never actually used a l testosterone product before, but I was referred to this and I’ve been taking it for about three weeks. I sleep better, that’s the first thing i noticed. The second was recovery from workouts seemed to be much quicker. I found myself not complaining to myself as much. I would suggest trying if you haven’t. See for yourself. those are freaking awesome. Love their product and the packaging is nice as well as the customer service. This type of customer service will help you to answer your question and they really did in just a second. also shipping is fast as well so far i am really impressed.