Ask a doctor before use if you have glaucoma a breathing problem such as emphysema or chronic bronchitis trouble urinating due to an enlarged prostate gland Ask a doctor or pharmacist before use if you are taking sedatives or tranquilizers When using this product alcohol, sedatives, and tranquilizers may increase drowsiness marked drowsiness may occur be careful when driving a motor vehicle or operating machinery avoid alcoholic drinks excitability may occur, especially in children If pregnant or breast-feeding, ask a health professional before use. Do not use to make a child sleepy with any other product containing diphenhydramine, even one used on skin. 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).