[Heaven's Night]

For me the longest I've noted was about four weeks, nearly a month... I would think its safe to say that the effects last 2-4 after stopping. I did several long breaks when I was on herbs and noted this every time. When I switched on HRT, I didn't take a break and the first week was kinda quiet and after that there was a growth spurt, so I presume that first week it took for the receptors to clear enough for E2 to hit it.