This product has worked great in the past for me. For mass gains doing 1ml 3 x wk was great. But where I got the most out of it was using it as part of my trt. 0.5ml once per week.
If you want real good results try
Test E 1ml 2 times week 600mg week
Tren E 2ml 2 times week 800mg week
If i have to chose only 2 products to use all my life and only 2 i always chose Test E and trenbolone E or ace . With this 2 you can grow and also get shredded