In the past, I used to be prescribed zyprexa nightly for sleep, and I never felt anything on phenibut so I stopped taking it. I then stopped taking zyprexa and a long time after I tried phenibut and have been feeling it. Recently, I took ONE pill of like 5mg zyprexa because I couldn't sleep one night, that was several nights ago, and now ever since, I can't feel the phenibut at all and I get this weird physical feeling in my head that comes and goes the whole time, like something in my brain is fighting something else, the same feeling I used to get when I used to take it with the phenibut before. Can just ONE pill of olanzapine be cock-blocking me from phenibut and any other drugs for this long? How long should I wait? I took a very small dose of kratom like yesterday, and I almost never take kratom, and the same thing happened.