"Was able to get an erection, but it would only last a couple of minutes before ejaculation. Tried 10mg initially, but results were the same - no staying power. 20mg does the trick. Place the tablet under my tongue, let it dissolve in my mouth. I&#039;m fully erected and hard within minutes. Able to last a lot longer before ejaculation. Able to perform repeatedly throughout the night. A big ego boost for a 52 year old man."