You put them in your mouth and you swallow them.

Cold water extractions will help isolate the codeine from the acetaminophen. The process involves crushing the tablets, soaking in a little cold water and drinking the liquid. Complete guide found here: http://www.poppies.org/news/96924960077672.shtml

This doesn't seem very necessary to me though, since Tylenol 3's contain only 300mg of acetaminophen and even taking even over 5 of them wouldn't add up to a high enough dose of acetaminophen to result in any danger. (Unless you've already exceded 3000mg that day.) It is more for pills containing a lower dosage of codeine. The 3's have 30mg.
Nullific Reviewed by Nullific on . how bad is smoking useing tylenol by using i mean smoking pure t3's or mixing crushed t -3 withs weed. i had pure t threes earier today and had a short oddly altared high and now i smoekd like .2 with a t 3 and it felt like .8 and it came so quicjkly. how bad is this for my health. im pretty good to my body usualy so how bad is this? Rating: 5