Well it seems the effects have worn off. I started at 10:15 and it seems like it's worn off now at pretty much 4:00, it's a shame it only lasts about 6 hours.
It could all be placebo but I had much better focus and sharper mind. I'm gonna take another 2grams in about an hour just to see the difference.
As for any psychotic symptoms I cannot say as I've had no psychotic in about a year. I don't hear voices so I can't judge on that. And some days I feel great anyway, so it's hard to tell.
But at 4:00 I just had a feeling that something was wearing off, so I'm gonna try some more in an hour.
So you will have to most likely take sodium benzoate twice a day, which is a shame.
I tried looking up the half life of sodium benzoate online but couldn't find anything.
Though I still feel pretty focused, but it could be a placebo.