that's not very good advice.
while that does work for some, it depends on the type of addict a person is, and this guy beudcse he has just tried drugs for the first time, does not have a clue what type of addict he is
it would work for me beucase i was only addicted to one drug. but for a lot of people who are addicts, the use of one drug can and will trigger the want/need for another. these are called poly substance abusers.
http://en.wikipedia.org/wiki/Polysubstance_dependence
if this is his first time using anything he's best to tough it out for a few days until it gets out of his sytem and go about his way, changing one addiction for a lesser addiction is not a real solution
now i say that saying that while in AA and a sponser i told people, more than once to smoke a blunt to make it threw the night but that's apples and oranges, the people i am talking about have/had full blown crack/meth/herion/pill addictions and go on 500-1000-2000 dollar 3-5 day benders.. if smoking a blunt can prevent that then yeah go ahead.
but this isn't that. he's at a very god point to where he can get out of this without being chemically or metnally addicted to anything, and that's the best way to be
also please note OP, the craving symptoms that you described, are extremely, extremely mild. on a scale of 1 to 10 that's about a 2 and a half to a three. I've had cravings so bad once i really got hooked that i would physically lock up until the craving wore off or i took a hit of the drug. you don't want to get to that point trust me.
soberrecovery.com and drug-forum.co.uk are 2 really good forums, there is a substance abuse recovery section on the 2nd site, i'm a member on both.
if you need to talk to someone pm me