LadyConstanze -> RE: Meds and sleep deprivation... (12/22/2010 3:40:41 AM)
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ORIGINAL: RapierFugue quote:
ORIGINAL: LadyConstanze I thought codeine works on the same lines, or is more or less based on morphine Sort of, but not quite. Codeine is metabolised within your body (via the cytochrome P450 enzyme pathway, if memory serves) into a form of morphine, but at a lower rate than a similar dose of morphine would be, as the cytochrome conversion is not a 100% efficient one - similar does are approximately 300 times lower in results for codeine than morphine, again if my memory serves. There's also research surrounding the way in which codeine uptake is affected by the 2D6 cytochrome pathway efficiency (which varies from person to person), which means that different people uptake codeine at different efficiency rates; what will have one person stoned off their gourd on the stuff won't even register with the next person. IIRC there's a genetic component to this process too, but I'm not an expert, and I've only had one cup of coffee so far this morning, so my memory's not all that ATM. A dentist explained my odd reaction to codeine due to past thyroid surgery I had, he said he noticed it with a few people, all of them had thyroid surgery, codeine based drugs work differently on them but said it's only based on his patients so nothing more than a guess but it made sense. I used to show up an hour before, as I always had a delayed reaction to the injections and while I was literally buzzing away, my jaw stubbornly refused to get numb, when it got numb it got numb in a different place and not where he actually injected. So he basically ended up injecting various places of my jaw and sometimes it worked, but wore off like nothing (great if you're in the middle of something painful and you can't just give more because it will take an hour again to work). It made visits to the dentist kinda interesting, he was not too pleased about me being super hyper and then BP dropping to nothing and fainting in his chair. In the end he switched the local anesthetic to some cocaine derivative, which worked a treat. In case it's enzyme based it makes even more sense, I have a couple of odd allergies, my body tends to have severe problems with digesting certain food combinations or red meat, apparently it's due to an enzyme I don't have but oddly enough lacking that enzyme is the cause that I can eat asparagus without the unpleasant smell that occurs when asparagus is digested. I guess I put "new body without any odd quirks" on the Xmas list and live in hope...
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