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!

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24 Answers

Anonymous 0 Comments

You’re making an assumption that it’s the caffeine that makes you want “make a deposit”.
Though caffeine was originally thought to be the primary factor, the fact that decaf also makes you want to poop means its not the caffeine.

Chlorogenic acids and N-alkanoyl-5-hydroxytryptamides are now the prime candidates which is why Coffee, even Decaf makes you want to poop but sodas do not.

Anonymous 0 Comments

Not sure what the caffeine content is, but the Mean Bean coffee drink by Monster should straight up be labeled as a laxative. Do not consume without a bathroom nearby.

Anonymous 0 Comments

The major meme-worthy reaction to coffee isn’t to caffeine, there’s an acid in it which acts as a mild laxative for about 30% of people. That acid is not present in things like mountain dew or energy drinks which is why some people need a shit after a morning coffee but can pound monsters no problem.

Anonymous 0 Comments

There are likely other componants in coffee besides caffiene which might stimulate a bowel movement, which is why some people can still get the effect with decaf. It could be do do with stimulation extra acid production in the stomach or something else

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.

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

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

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

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

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.