it'll cause the stoning to be less enjoyable and less visual, shit mix.
Byut I will say this, if your ever tripping out and want it to stop it or anything, particularly on, but not restricted to weed (;but also stimulants and prob others...) take 10mg of temazepam and it'll save ya.
actually it's helped me in a few of scary drug-related bad sitches.
NiQueLorD