Ask a doctor or pharmacist before use if you are taking sedatives or tranquilizers. Ask a doctor before use if you have heart disease high blood pressure thyroid disease diabetes trouble urinating due to an enlarged prostate gland a breathing problem such as emphysema or chronic bronchitis glaucoma. Stop use and ask a doctor if nervousness, dizziness, or sleeplessness occur symptoms do not improve within 7 days or occur with a fever. Warnings Do not use to make a child sleepy with any other product containing diphenhydramine, even one used on skin 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 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. (1-800-222-1222). When using this product do not exceed recommended dose marked drowsiness may occur 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.