Cialis is a medication primarily used to treat erectile dysfunction (ED) and symptoms of benign prostatic hyperplasia (BPH), which is an enlarged prostate. Its active ingredient is tadalafil, which belongs to a class of drugs called phosphodiesterase type 5 (PDE5) inhibitors.
Cialis works by relaxing the smooth muscles in the blood vessels, allowing for increased blood flow to certain areas of the body, particularly the penis, which helps to achieve and maintain an erection during sexual stimulation. It does not lead to spontaneous erections and requires sexual arousal to be effective.
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