I started 3 or 4 days ago and I'm feeling something. my nips seem to be hard A LOT more often. I'm in Texas so I know it's not from the cold weather. I'm using maybe 1600 mg a day, but I'm not on a cycle. I'm using it because I've always had puffy nips and NOTHING else has seemed to work. I think this stuff is though. I'll keep you guys posted.