Deslsym I use almost extensivly cause, well - $12 for a 5oz bottle is about 875-880mg after extraction (with room for lose and error). compared to aprox. 300mg per $4 bottle of generic, you STILL will spend about $12 getting 900mg, but think about it - you gota extract 3 bottles!!! haha
Deslym, poor the bottle into a container, and add hot water to it, rinse the bottle 4 or 5 times and fill up till about 1/2 inch is left from top - screw on cap, and shake that motha!!! ect ect ect... basicly by doing that, you seperate the DXM from the gunk, wait so many hours, and drain the liquid out to get a small pool of watery mess with the delicious DXM powder at the bottome lol
as for any other DXM syrup - get one with ONLY DXM as active ingrediant. that Guaifenesin crap isnt "bad" and most of it I heard extracts out away from dxm, but I dont wanna take chances with it. SO the "agent lemon" versions is what I heard works wonders, and I only did it once (its not hard, just alot of steps) - there is other ways to get DXM out, and of corse, buying powder online is an option.
If you buy online, word of advice, make it seem like your using it for research, and-or, you dont sound like a druggie. If they require any ID, or such, skip them - since DXM is not controlled substance its not illegal to HAVE, but it is illegal to mis-use it. and for the love of god, dont SELL IT. You get caught with a bag of DXM powder, you going to jail till they find wtf it is, and it also makes us, legit users, look bad. If your friend wants DXM, but is too lazy to make it, your friend doesnt get DXM haha - thats my opinion haha