Cialis belongs to a group of medicines called phosphodiesterase type 5 (PDE5) inhibitors. It is a yellow, film-coated, almond-shaped, oral tablet prescribed to treat men suffering from erectile dysfunction. Cialis is not an aphrodisiac and does not increase libido. It requires sexual stimulation to be effective.

Cialis helps to relax the blood vessels in the penis, allowing blood to flow into the penis causing an erection. However, it will only help a man to get an erection if he is sexually stimulated. Men who do not have erectile dysfunction should not take Cialis.

Cialis is available in two strengths, 10 mg and 20 mg. The recommended starting dose is 20mg. The 10mg dose is available for patients who suffer from renal impairment (kidney problems). Cialis is taken prior to sexual activity. It can be taken with or without food or alcohol.

Clinical trials have shown that, with sexual stimulation, Cialis starts working in as little as 16 minutes and can remain effective for up to 36 hours. The maximum recommended dose is one tablet per day.

Cialis should be taken only as directed by your doctor, who will take into account any other medications you may be taking.