To help you remember, take it at the same time(s) each day. Use sunscreen and wear protective clothing when outdoors. To reduce the risk of dizziness and lightheadedness, get up slowly when rising from a sitting or lying position. If you take it only once a day, take it at bedtime to reduce daytime sleepiness. Do not increase your dose or use this drug more often or for longer than prescribed. Read the Medication Guide provided by your pharmacist before you start taking doxepin and each time you get a refill. Use sunscreen and wear protective clothing when outdoors. This medication passes into breast milk and may have undesirable effects on a nursing infant.