Ask a doctor or pharmacist before use if you are taking sedatives or tranquilizers. Do not use - in children under 12 years of age, with any other product containing diphenhydramine, even one used on skin, with other antihistamines. If pregnant or breast-feeding, ask a health professional before use. Keep out of reach of children. In case of accidental overdose get medical help or contact a poison control center (1-800-222-1222) right away. When using this product - avoid alcoholic beverages, be careful when driving a motor vehicle or operating machinery. Ask a doctor before use if you have - a breathing problem such as emphysema or chronic bronchitis, glaucoma, trouble urinating due to an enlarged prostate gland. Stop use and ask a doctor if - sleeplessness persists continuously for more than 2 weeks. Insomnia may be a symptom of a serious underlying medical illness.