"For these reasons, before you start taking codeine, it is important that your doctor knows:If you are pregnant or breast-feeding.If you have a problem with the way your liver works, or a problem with the way your kidneys work.If you have prostate problems or any difficulties passing urine.If you have any breathing problems, such as asthma or chronic obstructive pulmonary disease (COPD).If you have" . . . . .