I loved all stealth products except the test 450 was pretty painfull. I screwed up big time once and did 2ml in my glute and had a major lump for 10 days. Big mistake! The dosages seem to vary when you look at some of the lab reports. Some samples didn't even contain 2 test blends and were way under dosed. I could do their test cyp using 3ml at a time with no problems. Great stuff!