So I have tripped many times with delsym. It had been about 3 years until this past weekend. I decided to give robocough a try and downed two bottles. I will say that compared to delsym, drinking this shit was like drinking sweet nectar from mother Mary's tit haha. Biggest difference I notice was how holy fucking fast that shit kicks in. Huge difference, and I think I prefer the time released. The trip hit hard and fast and was over before I realized wtf was going on. I have two more bottles so I'm going to do it at least once more, but I think after that I'll be sticking with Delsym. I like that nice slow climb and long lasting 3rd plat. All in all though, it was definitely amazing climbing back on the horse.