Injectable codeine is readily available for subcutaneous or intramuscular injection only; intravenous injection is contraindicated, as this can lead to nonimmune mast-mobile degranulation and ensuing anaphylactoid response. Codeine suppositories will also be marketed in some countries. Codeine is undoubtedly an opiate and an agonist with the mu opioid receptor (MOR). https://codeingil.com/