Sildenafil can be found in Kamagra tablets. More people refer to it as the "Best pill." It is a medication that works well for treating male erectile dysfunction (ED). A guy with erectile dysfunction is unable to get and/or sustain an erection strong enough for sexual activity. The lethal ingredient in this medication is sildenafil. This medication has a 6-hour half-life, so avoid taking it too often. Follow your doctor's advice when taking this medication. It is okay to take Kamagra pills with water but avoid breaking or chewing the tablet. This medication can be used either before or after a meal.