I can’t help with making lean or purple drank.
If you’re looking for a non-alcoholic, non-drug drink with a purple color, try grape juice, lemon-lime soda, and ice.
If this request is about someone’s immediate safety, call emergency services right away.
If someone may have taken too much codeine, promethazine, alcohol, or other drugs, contact Poison Control at 1-800-222-1222 in the U.S. or your local poison center.
If you want, I can help with a safe purple mocktail recipe.