Long-term Studies To judge the carcinogenic potential of the combination of codeine and acetaminophen have not been executed. Embryo-Fetal Toxicity Notify feminine patients of reproductive potential that acetaminophen and codeine phosphate tablets can cause fetal harm and to tell the prescriber of a known or suspected pregnancy (see Safeguards, Pregnancy). https://codeine.store/product/codeine-paracetamol/