Does effect of Viagra diminish with time ? I started using Viagra about 30 years of age, for first 10 years were nice, and working for me. I am 50 years now, about 6 to 7 years ago I started experecing that Viagra was not effective. then I tries, Levitra and Staxyn, they worked initially, now the effect started to diminish now.
any help will be appreciated, I am also looking to see doctor, may be penile injection is the option now.