Some years ago my doctor prescribed anti-depressants for me even though I told her I wasn't depressed, but she insisted I was, and as a result they made me feel woozy as if I was on a different planet, I suppose because they contained a mild LSD derivative or something, so I flushed the rest down the toilet but it took some weeks before the stuff was out of my system and i was back to normal.
The moral?- wrongly-prescribed meds are a no-no.