Injectable codeine is available for subcutaneous or intramuscular injection only; intravenous injection is contraindicated, as this may end up in nonimmune mast-mobile degranulation and ensuing anaphylactoid reaction. Codeine suppositories will also be marketed in some nations. Codeine is surely an opiate and an agonist on the mu opioid receptor (MOR). https://www.codeingil.com/