Question regarding Excedrin migraine and Excedrin tension headache medicine

So the Excedrin migraine has 50 mg of caffeine and 250 mg of aspirin. The Excedrin tension headache medicine has 500 mg of acetaminophen and 65 mg of caffeine.

My question is, because of the amount of caffeine in the medication, is there a good time in the day when you might not want to take the medicine because it could potentially keep you awake for longer, or does the caffeine in the medication not affect you like other caffeine from say, beverages?

Typically, I will take two Excedrin migraine at a time which is the maximum allowed limit in a 24-hour period. Since the Excedrin tension headache medicine dosages are a lot higher I was thinking about just taking one, but I wanted to get other people's opinions about it.

Thanks

Dex1981 · 41-45, M

The half life of caffeine in your system is about five hours. So if you took an Excedrin Migraine at noon, you'd have about 25mg in your system at 5 pm, about 12 at 10 pm.

The average person isn't gonna want any more than 20 mg of caffeine in their system when they go to bed.