Ask a doctor or pharmacist before use if you are taking sedatives or tranquilizers. When using this product - avoid alcoholic beverages, drowsiness will occur, do not drive a motor vehicle or operate machinery. Stop use and ask a doctor if sleeplessness persists continuously for more than 2 weeks. Insomnia may be a symptom of serious underlying medical illness. Ask a doctor before use if you have - a breathing problem such as emphysema or chronic bronchitis, glaucoma, difficulty in urination due to an enlargement of the prostate gland. If pregnant or breast-feeding, ask a health professional before use. Keep out of reach of children. Overdose warning: taking more than directed can cause serious health problems. In case of overdose, get medical help or contact a poison control center right away. (1-800-222-1222). Do not use - for children under 12 years of age, with other nighttime products, with any other product containing diphenhydramine, even one used on skin, with other drugs that cause drowsiness such as antihistamines and nighttime cold/flu products.