for those that want an actual list of what is in meth here you go...

What is Meth, Meth Labs & How Users Make Methamphetamine - Meth Project

if you google the word pseudoephedrine you will find that this is one of the main ingrediants of allergy medication sudafed and others.

anyone who wants to know the actual ingredients in meth can contact their local police department who will explain how if a drug dealer can not get to the sudafed (pseudoephedrine) they use dyphenhyramine (benedryl) instead for making the meth. some drug dealers actually like using the benedryl because it Treatment providers are more readily willing to prescibe benedryl

in march 2006 president bush enacted a law moving Sudafed and other antihistamines and cold medications that contained meth ingredient pseudoephedrine (which includes some varieties of benedryl) to behind the pharmacy counter due to they are meth ingredients.

Why some cold medicines have moved behind the counter

the benedryl types that are still on the over the counter shelves either they dont contain the ingredients for making meth or the makers have removed those ingredients so that they can keep their products on the over the counter shelving.