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

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

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

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

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

Faulty premise.

20 oz. of Mountain Dew has about 90 mg of caffeine.

12 oz. of Dunkin Donuts coffee has almost twice that, at between 150 and 180 mg.

12 oz. of Starbucks coffee, depending on the roast, can be anywhere from 200 to 275 mg.

Even preground highly processed stuff like Folgers is probably 120 to 160 mg in a 12 oz. cup. Folgers half caff has almost as much caffeine in a 12 oz. as Mountain Dew has in a 20 oz.

Anonymous 0 Comments

Like others have said, coffee has other chemicals in it besides caffeine that are responsible for intestinal stimulation. Even decaf has an effect.

https://www.gizmodo.com/why-does-coffee-make-us-poop-scientists-gave-coffee-to-1834852779/amp

Anonymous 0 Comments

Dont know. But if youre ever constipated: ride a bike whilst drinking coffee and smoking a cigarette.

Anonymous 0 Comments

OP should be more clear about “use the restroom”. Soda definitely makes me pee, but coffee also has the reputation of making you poop.

Anonymous 0 Comments

I have a follow up question if anyone knows the answer?

If coffee has >140 mg of caffeine in 12oz cup and coffee is socially acceptable.

Why is a sugar free energy drink at 160 mg of caffeine treated like it’s the devils piss ?

Anonymous 0 Comments

>but the caffeine in soda doesn’t, despite being around the same amount of stimulant

What kind of soda are you drinking that has the same amount of caffeine as coffee?

There’s 34mg caffeine in 12oz coca-cola (and also similar in pepsi) and >140mg caffeine in 12oz coffee.

I’m sure if you drank 50oz of coke (approximately 140mg of caffeine), you’ll need to use the restroom also.

I’m not sure if you mean specifically coke by “soda” – other fizzy drinks like sprite has 0 caffeine.