Cialis (tadalafil) is an erection medication used to treat erectile dysfunction (ED). It works by relaxing the muscles and arteries in the penis, so it can fill with blood and become erect. It also acts as a vasodilator, which means it increases blood flow to the penis and other areas of the body. Cialis works by blocking an enzyme called phosphodiesterase type 5 (PDE-5). This enzyme breaks down cGMP, a chemical that makes smooth muscle cells relax and blood vessels dilate. Cialis blocks this enzyme to increase the levels of cGMP, which helps to make an erection.
It takes around an hour for Cialis to start working. It is usually taken as needed before sexual activity. However, some people may find it helpful to take a lower daily dose so that the medication is always in their system. Talk with your doctor about the best way to use this medication.
If you have liver or kidney problems, your doctor may need to adjust the dose of Cialis. Call your doctor right away if you have any side effects that are serious or that do not go away, such as a fever, sore throat, burning eyes, painful urination, red, purple, or blistering skin, or severe headache.
Cialis does not cause sex drive. If you are having trouble getting an erection, it is likely due to other issues. Other treatments for ED include lifestyle changes, exercise, and psychological therapy. If you are ejaculating sooner than you want to during sex, you can try using techniques such as the start-stop technique and the squeeze technique to delay orgasm.