DayQuil Severe Cold & Flu

Do not use this medicine if you have taken an MAO inhibitor in the past 14 days. A dangerous drug interaction could occur. MAO inhibitors include furazolidone, isocarboxazid, linezolid, phenelzine, rasagiline, selegiline, and tranylcypromine.

You should not use this medication if you are allergic to acetaminophen, dextromethorphan, guaifenesin, or phenylephrine.

Ask a doctor or pharmacist if it is safe for you to take this medicine if you have other medical conditions, especially:

• liver disease, alcoholism, or if you drink more than 3 alcoholic beverages per day;

• high blood pressure, heart disease, coronary artery disease, or recent heart attack;

• diabetes;

• glaucoma;

• epilepsy or other seizure disorder;

• enlarged prostate or urination problems;

• cough with mucus, or cough caused by emphysema or chronic bronchitis;

• pheochromocytoma (an adrenal gland tumor); or

• overactive thyroid.

It is not known whether acetaminophen, dextromethorphan, guaifenesin, and phenylephrine will harm an unborn baby. Do not use this medicine without a doctor's advice if you are pregnant.

Acetaminophen, dextromethorphan, guaifenesin, and phenylephrine may pass into breast milk and may harm a nursing baby. Decongestants may also slow breast milk production. Do not use this medicine without a doctor's advice if you are breast-feeding a baby.

Artificially sweetened liquid medicine may contain phenylalanine. Check the medication label if you have phenylketonuria (PKU).

Since this medicine is used when needed, you may not be on a dosing schedule. If you are on a schedule, use the missed dose as soon as you remember. Skip the missed dose if it is almost time for your next scheduled dose. Do not use extra medicine to make up the missed dose.