Hi I am a 20 stone 34 years of age male who currently takes on average 20 YES 20!! 30 mg codine phosphate tablets daily due to back problems but my doctor does not know I am actualy taking this dose but Im handing my script in every week instead if nearly monthly and he has never mentioned this. The fact of the matter is if he discovers im taking more han my recomended dose he will stop my script and I am also worried sick incase this high dosage will cause me any permanent damage, many thanks..