If you have any experience with hydrocodone, your best bet would be to just take your normal dosage of hydro, or about half an hour before your hydro dose, you could drink the equivalent to 50 mg of promethazine before the hydro, that will potentiate the hydrocodone a bit. It will be stronger than codeine syrup, which is what i assume youre referring to as lean. If you have never taken hydrocodone, I suggest taking half of one of your pills (5 mg) at first, and waiting 45 minutes to an hour to see where that gets you.