Hi, my boyfriend is a codeine addict and has been taking neurofen plus for about 10 years, he recently didnt have any for a day and that same day he started getting stomach pains and needing the toilet very frequently and having large bowel movements, he has codeine again today but still is feeling unwell, dizzyness blurred vision and tiredness, i have been reading and was thinking it was chronic disease or worse some of his symptoms are of bowel/colon cancer.. he has also had anemia experiences recently, he is 29 years old.