Umbo, I routinely use doxylamine succinate with codeine to increase sedation as well as reduce nausea and itching. Those pills you have would be really unsafe to use for someone like me with a large codeine tolerance, however I notice you mentioned you only intended to CWE 10 tabs which has approximately 61.2mgs and really when you factor in losses is probably closer to 50mg.
I always use 50mg doxy with my codeine doses but I purchase doxylamine only tablets so I can choose my dose and it doesn't impact on my codeine consumption. My first time I only took 25mg but I have used 50mg on every other occassion nearly and would not say this is unsafe to use with your usual codeine dose. I am not sure at which point doxy causes delerium but the reson you don't want to do large extractions on doxy containing pills is you will trip out like nothing else.
To people talking about mixing the stuff, cordial is a good mixer because it tastes strong but does not require you to bulk out the liquid much. I have always found diluting it pointless because for how much you kill the flavour your giving yourself that much more liquid to drink. I think it hits a bit harder if you drink it straight too.
Ashley26, no need to be nervous CWE is perfectly safe, easy and most importantly enjoyable.

Don't know if you have prior opiate experience but it may be wise to not dive in too quickly, be a tad conservative. Although in my personal experience nobody I have given codeine too has noticed much off less than 300mg there appears to be many much more sensitive to it than that. I would like to add, I am an avid user of codeine and my extraction technique is definately not faulty.
Thanx for that , True I would have only done 10 to be "safe" not knowing the effects of the Doxy and as I've read a little more around the joint I've noticed that many take doses of 50mg and even higher ... So I probably would have been fine , but after 6 beers or so and popping 3 I'll certainly say I wasn't expecting for it to hit me so hard (semi-nodding for about 1/2hr 2 hrs in) so I sure would have crashed hard with 10 or so.
Like you say , it would be better to be able to choose the dose , more Codiene lesser Doxy ... I will just keep those tabs now for emergency "sleepers".
Got 2 more packs of standard 10/500s today (Chemists own ... bless 'em) so I'm sorted again. Was going to up my usual from 12 as even use of only every 2-3 days (on average) is building tolerance (sigh) ... not to even mention I would absolutely love to have a decent 'recreational' dose but I'm afraid to mess up my tolerance for the somewhat responsible way I use this drug/method , if that makes sense. (until I read here tonight I was gonna go straight to 24 ... but again , after a few beers ... I'm still not sure how high the risk is on the combo , plus I got some nice budz so there is not as much need for pain relief and sedation right this minute. %))
Hmm , and I wonder If I needed to hear that large doses of Doxy would make me trip out , hahah , lucky some of the first info I read on it made me think over 50mgs is pushing it ... I wish I could remember the source but said over 75mgs was potentially toxic and the side-effects were very bad. So I will play it safe and live to take more drugs another day. No Worries.
As for the Taste thing ... maybe it's just me but I don't find it very bad at all ... I mean if you can have 2 shots of alcohol@40% anything I don't even see how this could compare ... I hear comments of extremely bitter and almost like sucking a lemon but I don't find that it's way bitter , just tastes like chemical water to me (tastes like city water lol) ... well , it just tastes like you've dissolved two of those tablets in the water , like if you let a tab melt under your tounge , that taste but nowhere near as bad. I wouldn't mix , ew. that would taste way worse.
I just drink it and go about my business , notice the taste for maybe 10 seconds , then bit of water , beer or cuppa and a smoke , whatever the usual.
And the last bit , I'd agree to be conservative the first time if have no tolerance ... I really don't see how someone with no tolerance could not feel anything off less than 300mg ... I mean , anything? 20mgs help most people with a headache and to feel a little drowsy ofc ... so you must mean as a 'recreational' dose.

Seriously , I would not recommend taking 300mgs for the first time , although I'm sure It's relatively safe on it's own. (and I'm sure your technique is fine also btw

).
Agree too that there is no need to be nervous , So simple ... effective and arguably the safest method to use these APAP containing pills ... Save thy liver ... and just to note ... I personally Would CWE 4 pills (5 for 4 equiv) if needed ... I'll take as little APAP as possible these days , It's borderline useless for pain anyway and oh so toxic ... I'm so damn glad I know this method and for the existance of this thread in particular.
Thankyou and best wishes to all.
Cheers.