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.
Ask a doctor before use if you have cough that occurs with too much phlegm (mucus); persistent or chronic cough such as occurs with smoking, asthma, or emphysema; a sodium-restricted diet.
Stop use and ask a doctor if cough persists for more than 1 week, tends to recur, or is accompanied by fever, rash, or persistent headache. A persistent cough may be a sign of a serious condition.
If pregnant or breast-feeding, ask a health professional before use.
In case of overdose, get medical help or contact a Poison Control Center right away.