2. Know‍ the components: ‍Lean syrup ordinarily is made up of ‍a mixture of codeine, promethazine, as well as other substances.⁣ Familiarize ⁢on your own With all the ingredients ⁣checklist and consult which has a healthcare professional⁣ When you've got any ‌problems or pre-current circumstances. Too much or extended usage of⁣