@kmakm
It's very interesting to see all the different opinions of the doctors and the things that you read. Some articles say that Tamoxifen, not sure about Letrozole, takes approx 100 days to get up to the levels they want it at ( hence the cumulitive effect of the longer you're on it the worse it gets for some I guess) but can leave your system quickly so they don't recommend it.
The next article you read says 3 on 1 off makes no difference at all and three on three off would be well Yahoo, awesome.
@Afraser I found quite a difference between the generic brand and the Novladex. I had been having significant decreases in the intensity of the hot flushes each break and by switching brands they have improved even more.