I'm 2 1/2 weeks on a Primo only cycle @500mg wk. At this point I can tell how a cycle is going to ride out.
My muscles are tightening, but they're losing their mass. My strength seems to be going down. My appetite is repressed badly. I know I'm not going to be able to eat enough to make good muscle gains. IMO I wouldn't use this stuff unless you're stacking it with something else or you want to lose weight, cut up and you already have all the muscle you want.
I'm going to cut back to 300 or 400 mg and add some EQ. Hopefully that will help with the appetite. I may drop the primo altogether. This is turning into my worst cycle. It's not feeling good watching the gains I made while I was natural over the last several months disappear. Hopefully, I can turn this shit around.