How safe is NAC when taken after drinking?

I've been taking NAC to help with my hangovers but just noticed a study showing that it can further damage your liver if taken after drinking. This is only a study on mice but I how concerned should I be?"Pretreatment with NAC significantly protected against acute ethanol-induced liver damage in a dose-independent manner. Correspondingly, pretreatment with NAC significantly attenuated acute ethanol-induced lipid peroxidation and GSH depletion and inhibited hepatic TNF-alpha mRNA expression. By contrast, post-treatment with NAC aggravated ethanol-induced hepatic lipid peroxidation and worsened acute ethanol-induced liver damage in a dose-dependent manner."Source: http://ift.tt/2v9imGw via /r/Supplements http://ift.tt/2uNMc0B