Quality is good, from using another of their orals before and seeing the effects it had on me I wanted to also give the proviron a try. Using it for 3 weeks now. I was a sceptic of Proviron but while using it I did not use an AI on my trt dose and never had an issue with mood swings or even the occasional anger swing that reminds me its time. Not sure what else I noticed but I won't sit here and lie like others and say my lifts went up 100 pounds and I gained 40 pounds in 5 days. My libido is always strong when my AI is dialed in and with the addition of this and dropping the AI my libido stayed exactly the same so that in itself is a good sign its doing something.