I thought this generic Zyrtec brand was exactly that. Generic. I would say it basically worked at about medium strength for my body personally and the symptoms that were most affected were my itchy watery eyes, the tickle in my throat and it basically stopped most of my sneezing. But like I said it worked somewhat and for my other symptoms it did not seem to work at all. I also noticed that once I took it I would feel really drowsy after eating anything to the point where I started needing to take naps throughout the day. If I couldn't take a nap I would become really irritable. I would not be purchasing this brand again. Ease of Use I suppose they were pretty easy to use. They were not too big of size and they did not seem to have any real aftertaste or anything like that. Immediacy For the little bit that they did do it seemed that they starting working within thirty minutes or so of me taking them.