If I could compare codeine to any other opiate it would be morphine, it feels similar to a very low dose as part--roughly 10% of the dose--is converted to morphine anyway. But yeah, up the dose, you're a big lad so 200-300 mg won't hurt you, especially since you're already tolerant to another opioid.
Wow, that guy is clearly not a chemist. I wish he was back so I could ask him which university he got a chemistry degree from, so I would know not to go there. I bet he had a bachelor degree and calls himself a chemist. A chemist is one who does research in their field, i.e some Masters, but officially a chemist is someone posessing a PhD (doctorate) in chemistry.
Yes pr0voke is wrong, the CWE is solely based on solubility points, not on the total volume of water, that's an independent variable in this. Also, he was speaking like there was a wax matrix trapping the particles or something, in a fucking IR tablet. Gaah, as others have said, misinformation. I've lived to tell the story of doing of doing a 75 caplet extraction (600mg)--yes I'm opioid tolerant, Rx'ed hydromorphone--and the resulting solution had minimal tylenol in it as I triple filtered it and added juice. It was a high volume, but I went for total ceiling dose. The caffeine would be the biggest harm in that case; the clonazepam I used during the ingestion helped.
CWE is safe with any volume of water!