two. Know‍ the substances: ‍Lean syrup typically includes ‍a mixture of codeine, promethazine, as well as other substances.⁣ Familiarize ⁢by yourself While using the ingredients ⁣checklist and check with that has a Health care professional⁣ For those who have any ‌worries or pre-current ailments. Too much or prolonged use of⁣ W