I think it depends on how flawlessly they can get Viagra Through the fast-track approval process. If the FDA asks one question and Pfizer has to spend months developing an answer, then I think the stock will drop to $50. It may still take a dive when the correction occurs in the pharma. sector.
I have followed pharma market for 7 years. Unless we beleive they can pull off 40% earnings growth look for this one to pull back to acceptable levels. I agree with your $50 per share and bet we can do that in may or june 1998