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

Coffee *usually* has more caffeine than soda, and soda usually has a lot of salt in it, which makes you retain moisture.

Anonymous 0 Comments

Coffee has much more than just caffeine in it, it also contains other alkaloids like theobromine, and in lower concentrations a myriad of other compounds similar to caffeine, this full spectrum blend is what makes some people say that coffee gives a different feeling than the equivalent amount of caffeine. In my personal experience, there’s something about coffee in and of itself that causes this phenomenon. A 200mg caffeine pill does almost nothing with regards to that, but a single cup of coffee (~100mg?) absolutely will! Same story with soda etc. while I don’t have any concrete proof to back this up, I believe that it is mainly caused by other compounds found in coffee.

Anonymous 0 Comments

Diuretic is the drug type that makes kidney basically expel more urine to bladder. Caffeine is both a stimulant and diuretic. Not all stimulants are diuretics. Coke 12 oz is about 35 mg of caffeine while 12 oz of coffee is around 100-125 mg. It’s not even really close.

Anonymous 0 Comments

It coincides with the time of day. The morning is when you are most likely going to empty your bladder.

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.

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

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

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

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

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.