Cough syrup? I love codeine syrup myself. DXM cough syrup is vile though, and is only really of any use in preventing opiate tolerance, to me at least.
If its dextromethorphan, be aware that it has potentially dangerous interactions with some antidepressants, particularly SSRIs, tricyclics, MAOIs and the painkillers tramadol and potentially pethidine/meperidine.
I've always found DXM to be a really shite dissociative though. I'm pissed off that the government scum 'temporarily' banned methoxetamine...we all know what governments are like with banning things. So called temporary...my arse...no way they will allow it to remain legal after the socalled evaluation period. Glad I got a last minute order in before the ban. Its been a godsend for reducing my painkiller tolerance, allowing me to even take breaks from the oxycontin, and just let a few build up in case of doctor fuckups, which have happened once or twice before.
Hopefully it should arrive today. (and yay..I found a lost oxy under my bed, that went shooting across the room when I opened the blister pack. Just as well, because my hip is absolutely murdering me.