I think I found out why I was getting tired in the afternoon. During some days in the summer months I would take this Tylenol Allergy Complete in the morning. I didn't think that it would cause drowsiness, but I guess I was wrong. I got exactly the same number of hours of sleep during the weekdays last week, but on Tuesday, I took that medicine at 9:30am. From 2:00pm-4:00pm, I really wanted to go to sleep.
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