This thread started awhile ago but i just wanted to add a few points and perhaps answer or shed some light on a few questions i saw as i was reading through the thread:
Why do or would manufactures cut before shipping?
> I believe cutting is probably done for a more practical reason than increasing profits (im sure money has something to do with it). However, any one with chemistry experience or even someone without who has experience with coke would know or at least have an idea that coke is a substance that attracts water.. (is it anhydrous?) so if the colombians or whoever sent pure coke out of the country it would prolly be a big globy mess by the time it reached it destination. at least that one reason i have heard and can approve of.
secondly i see alot of people are blaming a cut in there drug for what sounds a lot like the effects of gaining a tolerance to that drug. From what i know about neurochemistry, a brain can only take so much dopamine too much and receptors become damaged and wont react properly until given time to repair, epinephrine receptors are hardier and can take more. Hence the feeling that your coke has lost its euphoric effect and gained more of the disliked effects like speedyness, paranoia, irratiability, etc.
also the neurochemistry at the precise moment you are doing a drug can have an effect on your experience, your diet effects that everyday, as well as sleep or lack thereof.
there are a lot of reasons why your coke feels less pure or cut or whatever, but who really knows what the purity of your substance is. It would take a sufficient amount for a user or low on the chain dealer to do a purification in an attempt to even estimate the purity. I dont know any users that can afford to do that. AND asking your dealing is not an effective way of finding out either. who wants to admit their shit isnt quality.
the way i see it is that there is good coke and bad coke. if you get bad coke find another dealer. Unless of course you have the money (and the balls if i might add) to ask the cartel about purity directly.