Do not use: 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); to make a child sleep. Ask a doctor before use if you have glaucoma; cough that occurs with too much phlegm (mucus); a breathing problem or chronic cough that lasts or as occurs with smoking, asthma, chronic bronchitis or emphysema; trouble urinating due to enlarged prostate gland; a sodium-restricted diet. Ask a doctor a pharmacist before use if you are taking sedatives and tranquilizers. When using this product: do not use more than directed; excitability may occur, especially in children; marked drowsiness may occur; avoid alcoholic drinks; be careful when driving a motor vehicle or operating machinery; alcohol, sedatives, & tranquilizers may increase drowsiness. Stop use and ask a doctor if: cough persists more than 1 week, tends to recur, or is accompanied by fever, rash, or persistent headache. These could be signs of a serious condition. Pregnancy/breast-feeding if pregnant or breast-feeding, ask a health professional before use. Keep out of reach of children. In case of overdose, get medical help or contact a poison control center right away. Other failure to follow these warnings could result in serious consequences. Tamper evident: do not use if printed shrinkband is missing or broken.