Following. Tested for low T. Libido wasn't a problem just really tired by 3 or 4 o'clock every day. My doctor and I talked about and he suggested supplements. Was actually looking into the pellet surgically placed. It's good for 6 months and he said you don't have the ups and downs like the weekly shots. I'm interested in others thoughts on this. I haven't decided on any options yet.
I have used the pellets for over a year now and this is my experience: I'm 63 and my wife is 52. The difference in the libido is a little life changing. It caused my wife to go and do it too. The difference in energy for me has not been significant. It has been in my wife. She's a competitive athlete and trains really hard 5 days a week. My ability to gain muscle did improve very noticeably. My gym workouts are more productive. It didn't help me to sleep however.
I think the pellets are a safer way to administer the testosterone. You have to be a little careful for about 5 days. No squats, ellipticals, cycling, etc. There's very little discomfort from the procedure. It's expensive is the only issue. You have to get blood tested for a couple hundred dollars, the procedure is $600.00, then you get tested again for T results, and there is a supplement they recommend.
So for me the big difference is much improved muscle gain and it's a fountain of youth for the libido. For my wife, it improved energy significantly, strength and libido. It's been pretty nice. We're believers. My advice is to give it a try to see if it works for you.