Apcalis Oral Jelly is a medication used for the treatment of erectile dysfunction (ED) in men. It contains tadalafil as its active ingredient. Tadalafil is a phosphodiesterase type 5 (PDE5) inhibitor, similar to sildenafil (Viagra) and vardenafil (Levitra). Tadalafil is the active ingredient in Apcalis Oral Jelly. It works by increasing blood flow to the penis during sexual stimulation, facilitating the ability to achieve and maintain an erection. Tadalafil has a relatively long duration of action compared to some other erectile dysfunction medications. The effects can last up to 36 hours, providing a longer window of opportunity for sexual activity.