Am I right that it's no issue to take tylenol (acetaminophen) nighttime in the day?

Tylenol (acetaminophen) Nightime. This product contains Diphenhydramine or benadryl (diphenhydramine). It's used at night because Diphenhydramine causes drowsiness. I would not recommend taking this product if you need to drive a car or be alert. Best to reserve it for bedtime.