Face, I wouldn't combine codeine with shrooms, I personally get quite nauseas off shrooms and I think codeine would add to that. While codeine is relaxing I don't think it has anti anxiety properties like benzo's and might help out with slight discomfort but not a real bad trip.
I think it would go well with clean acid that doesn't have much body load though, acid feels so much cleaner than mushies.
Leigh did you end up mixing seroquel with codeine? I have never had seroquel but I like combining sedatives with codeine so it sounds like it could be a reasonably good combination.
Sustanon, did you wet the shirt before you filtered through it? It does sound like you are enzyme deficient but then you get pinned pupils and shit of N+ so I really don't know.
My only advice is to use 3ml of water per pill instead of 2, use the shirt as a filter without putting it in a ciffee filter and then squeezing through the shirt. Squeeze the liquid through just the shirt and then run the resulting liquid through one or two wet coffee filters. It does sound like you are doing it okay though.
Try and get some panadeine fortes and see if they fuck you up, they are 30mg of codeine compared to 12.8 in nurofen plus. They should get you where you want to be if 6 N+ hits you.
Crankinit, in regards to drug tests there would be a lot of factors. I take drug tests and there are two categories for opiates, opiates and methadone like substances. I am not sure if any synthetic opioids count as methadone like substances or what it is that defines an opioid as a "methadone like substance" but since codeine is naturally occurring it would certainly count as a normal opiate.
They measure the concentration and there is only a certain level that I think could be passed off as codeine, I think that at therapeutic doses of codeine it would hardly touch the threshold dose needed to indicate a positive result. If you had done a 400mg codeine extraction a day before a drug test I think you would have a hard job arguing your case that it was codeine.
That is all speculation on my part though.