High on drugs how long?

since you did not specify, one must assume you are asking about cannabis...depends...not everybody gets high their first time....if so, then 2 or 3 hours...use links below as a resource guide...
http://answers.yahoo.com//question/index?qid=20120826074354AAGiqil

Top Q&A For: High on drugs how long

If you do drugs while you are pregnant how long will the drugs stay in the baby's system?

Remember, the fetus is still developing in the womb. What it experiences there it "perceives" as being normal, so if there are drugs in the woman's body, the baby will be born with its brain "wired... Read More »
http://wiki.answers.com/Q/If_you_do_drugs_while_you_are_pregnant_how_long_will_the_drug...

Start jogging. Jogging stimulates the endorphins in your brain and gives you a natural high. The high that runners get is addicting. That's why runners/joggers find it difficult to cut from thei... Read More »
http://answers.yahoo.com/question/index?qid=20061009140938AAg24uU

Never believe anybody who tells you that drugs are harmless, they only create an illusion of wellbeing anyway. True happiness comes through meditation - and with the kind of meditation I do, resul... Read More »
http://answers.yahoo.com//question/index?qid=20071027010141AAzFtrj