used to have quite the romance with codeine (30 - 40 prescription strength a week)
and 390mg (13 30mg/500mg Co-Codamol, just shy of where you reach the upper limit of 400mg where metabolisation stops - my body is a trooper capable of massive feats of endurance if you're wondering about 5.5g of Paracetamol), whilst extremely fun - if you consider being unable to move, incredible nausea and cold sweats a good time - never caused any kind of hallucination, unless you include crawling skin which I'd say was more a physiological rather than psychedelic effect.

Although I suppose a combination of the severely fucked-up mindset brought about by opiates, crawling/ itchy skin and feverish hallucination could produce these effects.

Not that I'm a drugs geek... By the way, CWEs are for women and homos... Liver damage kicks arse
(hypnoticme is an anarcho-syndicalist commune, Sat 18 Sep 2010, 11:48, 1 reply)

the skin crawling
is a histamine reaction. Quit a common codeine side effect. Worth having some OTC antihistamines to hand if you go down that route.
(unclestinky, Sat 18 Sep 2010, 14:58, closed)

Itchy skin is pretty common for opiates generally.
Skin irritation, constipation and a complete lack of any connection to the rest of the world seems to be the common thread for opiate abuse.
(Me, I'm not... in any way intoxicated, Sat 18 Sep 2010, 19:38, closed)