It is often sold to be a salt in the form of possibly codeine sulfate or codeine phosphate in The us, United Kingdom and Australia. Codeine hydrochloride is much more prevalent throughout the world as well as the citrate, hydroiodide, hydrobromide, tartrate, along with other salts will also be seen. https://mariolkdul.bloggazza.com/29777373/about-codeine-phosphate-30mg