Minimum 4 years and no excptions for any drug - careful about codeine tablets as well, as they are also banned. Cough syrup? Forget about it.
There is no shortage of alcohol here with great places to parte' so why risk a good thing. Go out get smashed and sleep it off. Play it safe please, unless of course the only thing you want on this year's Christmas wish list, is a years supply of KY.
Think of DJ what's-'is-name, a promising career at the BBC and heading for bigger things and then a silly mistake which cost him 4 years of his life.
Just not worth it.