Yes, for about two weeks at 5mg, quite clearly, though it seems to have faded again. I struggled to be 'in the moment', which never happened before, I'm a bouncing ball, always cheerful and social. At social events it felt like I'd checked out, almost stoned. I wanted to leave early and didn't feel like meeting up, though I'm usually the last one out. Everything felt blunt and I wasn't enjoying myself. Oddly it wasn't a negative feeling, not depressive, just... nothing. Everything tasted bland to me and nothing mattered.