viagra 100mg viagra Generika viagra alone is not going to to blame for your heart attack, as sometimes said in the media. Cialis shows the longest impact, which is frequently still present after a longer period of time than two days. As side effects - as an expression of the cGMP vasodilator effect, which is not just limited to your penis - headaches, reddening of this skin, rhinorrhea, indigestion and visual trouble (changes in color perception) occurred in over 5% from the patients. Before bringing Viagra day-by-day, your doctor might agree to extended use as it should see whether the medication is suitable for you.