I just saw a slide on the expiration dates of the existing patents for the "big three" (pardon the pun) ED drugs...Here they are:
Viagra ~ March 27, 2012
Levitra ~ 2018
Cialis ~ between 2017 and 2020
With Viagra coming off patent in 2012 that means that we will likely have the generic available here in the US. What impact that will have on the price of Levitra and Cialis remains to be seen. I would think that those prices will have to come down or the Viagra generic will dominate the market. Should prove to be interesting next March.
Advanced Prostate Cancer at age 44 (I am 48 now)
pT3b,N0,Mx (original PSA was 19.8) EPE, PM, SVI. Gleason 4+3=7
Da Vinci Surgery ~ 2/16/2007
Adjuvant Radiation Therapy ~ IMRT Completed 8/07
Adjuvant Hormone Therapy ~ 28 months on Casodex and Lupron.