Stop use and ask a doctor if nervousness, dizziness, or sleeplessness occur; Pain, nasal congestion, or cough gets worse or lasts more than 7 days; Fever gets worse or lasts more than 3 days; Redness or swelling is present; New symptoms occur; Cough comes back or occurs with rash or headache that lasts these could be signs of a serious condition. If pregnant or breast-feeding, ask a health professional before use. Keep out of reach of children. Overdose warning: in case of overdose, get medical help or contact a poison control center right away (1-800-222-1222). Quick medical attention is critical for adults as well as for children even if you do not notice any signs or symptoms. Ask a doctor or pharmacist before use if you are taking the blood thinning drug warfarin. Ask a doctor before use if you have liver disease, heart disease; High blood pressure; Thyroid disease; Diabetes; Trouble urinating due to an enlarged prostate gland; Persistent or chronic cough such as occurs with smoking, asthma, chronic bronchitis, or emphysema; Cough that occurs with too much phlegm (mucus). Do not use with any other drug containing acetaminophen (prescription or nonprescription). If you are not sure whether a drug contains acetaminophen, ask a doctor or pharmacist. If you are now taking a prescription monoamine oxidase inhibitor (maoi) (certain drugs for depression, psychiatric, or emotional conditions, or parkinson's disease), or for 2 weeks after stopping the maoi drug. If you do not know if your prescription drug contains an maoi, ask a doctor or pharmacist before taking this product. If you have ever had an allergic reaction to this product or any of its ingredients. When using this product do not exceed recommended dosage. Liver warning: this product contains acetaminophen. The maximum daily does of this product is 10 caplets (3,250 mg acetaminophen) in 24 hours. Severe liver damage may occur if you take more than 4,000 mg of acetaminophen in 24 hours, with other drugs containing acetaminophen, 3 or more alcoholic drinks every day while using this product.