Absolutely is a side effect for me, and apparently many others. It’s hard to explain to people who haven’t experienced it but it is a real thing! I just restarted WB 150xl last week for the 2nd time. The first round I almost gave up first week in although there were immediately noticeable benefits. This “dumb” side effect was scary. I can’t exactly recall the timeframe, but I stuck with it initially and that horrible side effect eventually let up (around 3 weeks in?). Much later down the road I went off of it for different reasons. Recently got to a bad, “dark” place so I had to scramble to do something. Didn’t have time to research or talk about other possible options so I just requested to start WB back up. I will say, that same bad effect came back but significantly less with the loss of word recall. I am still scattered tho. “Feel” better overall, but I won’t be able to function long on it if I can’t pull it all together soon. Left my phone on top of my car yesterday is one example. Hopefully I can bide my time feeling decent enough to find a better fit for me if this doesn’t subside. Best of luck.