When using this product - do not use more than directed. Do not use for children under 12 years of age. If you are now taking a prescription monoamine oxidase inhibitor (maoi) (certain drugs for depression, psychiatric), or for 2 weeks after stopping the maoi drug. If you do not know if your pharmacist before taking this product. Do not use - for childminder under 12 years of age, if you are now taking a prescription monoamine oxidase 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 conatins an maoi, ask a doctor or pharmacist before taking this product. Ask a doctor before use if you have - persistent or chronic cough such as occurs with smoking, asthma, chronic bronchitis, or emphysema, cough accompanied by too much phlegm (mucus). Stop use and ask a doctor if - cough lasts more than 7 days, comes back, or occurs with fever, rash, or persistent headache. These could be signs of a serious illness. 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. Questions/ 1-866-mucinex (1-866-682-4639) you may also report side effects to this phone number.