How long do ED pills last for?

The ED drugs break down at different rates in the body. The durations of action range from four hours to more than a day (for Cialis in the higher doses). Each dose should be sufficient to provide a full cycle of intercourse, from erection to climax.

"Will it last through another cycle? It's not guaranteed," Dr. Liou says. To have sex more than once a day, Cialis is your best bet.

What are the side effects of ED pills?

The most common side effects of ED drugs, in order of most to least common are headache, flushing, upset stomach, nasal congestion, vision problems, diarrhoea, dizziness, and rash. A man who has an erection that lasts four hours or more needs to get to a hospital or risk permanent damage.

None of the ED drugs is safe to take with cardiac drugs called nitrates because it could cause a dangerous drop in blood pressure. Drugs that many men take for urinary symptoms, called alpha blockers, can also lower blood pressure, so take them at least four hours apart from ED drugs. Your doctor may start you on a smaller dose of the ED drug if you already take an alpha blocker or may recommend the alpha blocker tamsulosin (Flomax), which affects blood pressure less.