Liver warning: this product contains acetaminophen. Severe liver damagemay occur if you take: more than 6 doses in 24 hours, with other drugscontaining acetaminophen, 3 or more alcoholic drinks every day whileusing this product. Do not use: with any other drug containingacetaminophen (prescription or nonprescription). Ask a doctor orpharmacist before using with other drugs if you are not sure. If you arenow taking a prescription monoamine oxidase inhibitor (maoi) (certaindrugs for depression, psychiatric or emotional conditions, orparkinson's disease), or for 2 weeks after stopping the maoi drug. Ifyou do not know if your prescription drug contains an maoi, ask a doctoror pharmacist before taking this product. To make a child sleep. Ask adoctor before use if you have: liver disease, heart disease, thyroiddisease, diabetes, high blood pressure, trouble urinating due toenlarged prostate gland, a breathing problem such as emphysema orchronic bronchitis, glaucoma. Ask a doctor or pharmacist before use ifyou are taking sedatives or tranquilizers. When using these products donot use more than directed. In addition, when using nyquil sinus:excitability may occur, especially in children, marked drowsiness mayoccur, avoid alcoholic drinks, be careful when driving a motor vehicleor operating machinery, alcohol, sedatives, And tranquilizers mayincrease drowsiness. Stop use And ask a doctor if: redness or swellingis present, symptoms do not get better within 7 days or are accompaniedby a fever, you get nervous, dizzy or sleepless, fever gets worse orlasts more than 3 days, new symptoms occur. If pregnant or breast-feeding, ask a health professional before use. Keep out Of reach ofchildren. Overdose: taking more than the recommended dose can causeserious health problems. In case Of overdose, get medical help orcontact a poison control center right away. Quick medical attention iscritical for adults as well as for children.