Why does the caffeine in coffee make us need to use the restroom, but the caffeine in soda doesn’t, despite being around the same amount of stimulant?

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Edit: I do not usually drink colas, I prefer clear sodas.

Mountain Dew is my favorite. When I think of having a Mountain Dew, I usually think of the 20 oz bottles. I don’t keep soda cans in the fridge.

When I have coffee I usually have the normal 12 oz over ice.

12 oz of coffee is more or less 100 mgs of caffeine. 20 oz of Mountain Dew is more or less 100 mgs of caffeine. This is why I said, “about the same amount of caffiene,” in my title.

I understand the confusion, and appreciate y’all caring enough to try and correct me in the comments. Hopefully this cleared some things up!

In: 127

24 Answers

Anonymous 0 Comments

Caffiene increases urination by acting on adenosine I’m your kidneys coffee increases excretion due to other chemicals

Anonymous 0 Comments

Are we sure that caffeinated soda doesn’t make you poo? Pre-workout definitely makes my bowels move.

Anonymous 0 Comments

A typical dark roast used in drip brewing averages around 24mg/oz. while soda is only 4mg/oz. Comparing equal amounts of coffee (three cups) to a can of soda, your caffeine content is ~ 300mg vs 50mg. Additionally, coffee has more dissolved solids and organic molecules which increase the osmolality of your plasma, making your kidneys work more.

Anonymous 0 Comments

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Anonymous 0 Comments

Soda does make you urinate more, as long as you’re not tolerant to that level of caffeine.

I don’t drink coffee. Hate the taste. I used to rarely drink soda, and when I did, I was in the bathroom every 60 minutes pissing clear for the next 5 hours.

Coffee just has about 4 times the amount of caffeine that soda has. So if you’re drinking enough coffee to feel it, then you’re tolerant to the lower amount that’s in soda.

Anonymous 0 Comments

Maybe I can answer your question with a question. Have you ever had a friend stick your hand in a bowl of warm water while you were sleeping??

Anonymous 0 Comments

It is primarily the water in the coffee that makes you need to go. I don’t believe there was a significant difference in recent studies between people who drank coffee and a control group who drank equal amounts of water.

Anonymous 0 Comments

Fun fact, it isn’t the caffeine. It’s other stuff in the coffee that flavors it, etc. Try some fresh ground decaf coffee and you will still definitely have to use the bathroom afterwards.

Anonymous 0 Comments

I got a better one. Why does the caffeine in coffee (or caffeine pills) make me super sleepy but caffeine in soda does not?

Anonymous 0 Comments

There has been research that has shown that drinking warm water can help bowel movements. The warm water + caffeine can be a contributing factor against a cold soft drink + caffeine.