I did and still do use.
I started at 5 mg a day-too much so now 2.5 mg.
At 5 mg brain was too active so I battled to fall asleep, but now better.
Really helps my memory and thinking.
Also sex has improved a lot.
Rather expensive if you buy privately.
I am 45 and very active physically and sexually.
Also 400 mg of Test.Cyp. every 2 weeks helped a lot.
Good luck. Good choice.