Roger wrote "Different drugs have different effects" and I thank him sincerely for that . . 'cause any discussion which talks about "drugs" as a single entity is over-simplified to the point of meaninglessness. Sadly - but rather predictably - too many posts here use "Drugs" to mean "drugs with the exception of Alcohol and tobacco", which (in any but a legal context) is even more silly.

But to return to the actual question, in general (and except in extreme moderation) clare s's post at the top of this thread says it all.

G.