@francine6829
That's the trouble... you only are hearing from those of us who are having trouble with it. Many more people have no trouble at all. The American Cancer Society (if memory serves) has a side-by-side comparison chart of the various AIs and their side effects. Interestingly, Arimidex (anastrozole) is reported to have the fewest side effects. In the end, it all depends on an individual's chemistry, fitness level, etc... some do better with one than another.... and trials-to-date appear to find that they help prevent recurrence.