Warnings: Do not use: to sedate a child or to make a child sleepy; 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); with any other product containing diphenhydramine, even one used on skin. Ask a doctor before use if you have heart disease; high blood pressure; thyroid disease; diabetes; trouble urinating due to an enlarged prostate gland; glaucoma; cough that occurs with too much phlegm (mucus); a breathing problem or persistent or chronic cough that lasts such as occurs with smoking, asthma, chronic bronchitis, or emphysema. Ask a doctor or pharmacist before use if you are taking any other oral nasal decongestant or stimulant; taking sedatives or tranquilizers. When using this product: do not use more than directed; may cause marked drowsiness; avoid alcoholic drinks; alcohol, sedatives, and tranquilizers may increase drowsiness; be careful when driving a motor vehicle or operating machinery; excitability may occur, especially in children. Stop use and ask a doctor if: you get nervous, dizzy, or sleepless; symptoms do not get better within 7 days or are accompanied by fever; cough lasts more than 7 days, comes back, or is accompanied by fever, rash, or persistent headache. These could be signs of a serious condition. Pregnancy/breast-feeding warning: 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 warnings: Packaged with tamper-evident bottle cap. Do not use if breakable ring is separated or missing.