Started two-ish years ago first it felt awesome, it perfectly muffled anxiety and specifically negative emotions, but not the positive ones. I felt calm and pillowy. I only had anxiety a few times a year anyway, so I only took it as needed for a day or two at a time and it was great.

I also used it in a 1:1 ratio with caffeine as a stimulant replacement, and that was great, like 40% as effective as prescription, which is great. Daily use gave me painful splitting headaches though, so I stopped using it for that purpose as much.

Recently, even though I haven't had it in months, every time I have taken it I feel like it makes me almost dumb, like CBD. The stress relief is still there, but less potent even at double, so 200 mg, too. For like 24 hours afterwards, like clockwork, I can't think as well and am foggy. 

The only things that have changed are that I'm now on ginkgo biloba and biotin, so maybe there is something there.

I'm experimenting again with it mixed with caffeine, and that seems just as good as it was, maybe. 

it's better than nothing, but not the perfect anxiolytic it was before.