The main purpose of the drug Kamagra Oral Jelly is to treat erectile dysfunction (ED) in males. It has the same active ingredient as Viagra, sildenafil citrate, which helps to develop and sustain an erection by increasing blood flow to the penis. Regarding its impact on sexual endurance, or the capacity to "last longer" during sexual activity, there is a widespread misperception. Tadalista 20: Erectile dysfunction relief.