Sildenafil in the treatment of erectile dysfunction: an

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This helps make sure there s enough medication in your body for Cialis to be effective. Long-term use. Doctors recommend using Cialis as a long-term treatment, even if you take it only on CIALIS for once daily use is a lower dose you take every day. Do not take CIALIS more than one time each day. Take one CIALIS tablet every day at about the same time of day. You may attempt sexual activity at any time between doses. If you miss a dose, you may take it when you remember but do not take more than one dose per day. cialis how long effective Taking Cialis does not prevent sexually transmitted diseases. Keep Cialis out of the reach of children. Cialis dosage FAQs How long does it take Cialis to work? Cialis is absorbed quickly by the body and hits maximum concentration in the blood within 30 minutes to six hours after being taken, but usually around two hours. Main Differences Between Cialis and Viagra. The main difference between Cialis and Viagra is how long each lasts. Cialis stays in your system for up to 36 hours, and you can take it daily. That means you can have erections whenever you want them. It s also possible to take Cialis as needed, about 30 minutes before sex.