My daughter 11 years old 100 lbs (big for her age), took (the correct dose) 5mL cough and cold medicine that had the following in that dose. Guaifenesin
, USP 100 mg
, Dextromethorpan HBr, USP 10 mL. Phenylephedrine HCI, USB 5mg. But then she also took (the correct dose) 10 mg of a prescription medicine Guaifenesin-Codeine syrup (generic for Robitussin AC syrup). It doesn't state on the label the quantity of Guaifenesin mg in the 5mL dose. How much is too much Guaifenesin?