Other than an occasional headache, no significant side effects. Sildalis lachamchurch.com works fairly well for me but just not consistently. I almost always get hard - REALLY hard.....but the erection doesn't last if foreplay is extended. So by the time I'm ready to penetrate, it isn't always stiff enough. As a result, I feel pressured to rush through sex with my boyfriend. Also, the price is absurd. The drug companies sure know how to play the game to delay generics from getting on the market. I understand the need to appease shareholders but there should be a better way than by gouging consumers.