Why Does Coffee Make You Pee

Why does coffee make you feel like you have to pee? Does caffeine make you dehydrated? What if it’s caffeine from tea? From an energy drink? This is the second in a three-part series on caffeinated water. In this series, we answer the most commonly asked questions including:

  • Does caffeine make you dehydrated?
  • If water makes you hydrated but caffeine makes you dehydrated, what does caffeine water do to your body?
  • Is caffeinated water better than energy drinks?
  • Does all caffeine make you dehydrated? Or just coffee?
  • How does caffeine affect urine output?

In This Series:

Caffeine, Urine Output, and Hydration – A Summary of the Science

Don’t have time to watch the full video? No worries! The key details are below.

Read more

Caffeinated Water 101

-updated 7/9/2019

Caffeinated water can be a great alternative to the stereotypical energy drink, but there are some important details to consider before trying it.  This is the first of a three-part series on caffeinated water. In this series, we’ll answer the most commonly asked questions including:

  • Is caffeinated water safe?
  • Is caffeinated water healthy?
  • How does caffeinated water compare to energy drinks?
  • Does caffeine make you dehydrated?
  • How does caffeine affect urine output?

I’ve been researching energy drinks for several years now and I’m always amazed at how far we’ve come from the days when Red Bull and Monster were your only alternatives to coffee and caffeinated soda. Caffeinated waters are another way energy drinks have evolved to meet the desires of consumers. In this case, that desire is for an energy drink with simple ingredients and minimal side-effects.

In This Series:

Caffeinated Water 101

Don’t have time to watch the full video? No worries! The key details are below.

What is Caffeinated Water?

Caffeinated waters lie on a spectrum. Some brands of caffeinated water are literally just caffeine and water; other brands of caffeinated water contain caffeine, water, and other ingredients like flavor, colors, and sweetener.

Where does the FDA stand on this?

The FDA’s definition of water includes the fact it’s zero Calorie. The FDA has issued warning letters to companies for using the word “water” to market/label drinks with added sugars because these drinks are not Calorie-free, and therefore can’t be called “water”.

How to Say Leviosa

Hello, Loophole: If it’s not Zero Calorie, it’s “water BEVERAGE”, not “water”.

For the rest of this discussion, I’m going to define Caffeinated Water as a non-carbonated beverage with caffeine and few other ingredients: no vitamins or electrolytes, no added sugars or juice, maybe some flavor or non-calorie sweetener and some citric acid for flavor and freshness.

Is Caffeinated Water Healthy?

In general, caffeinated waters will have less complicated formulas than the stereotypical energy drink. There (probably) won’t be any taurine, carnitine, glucuronolactone, or guarana in caffeinated water. This is good news for those who think energy drink ingredients interact and make energy drinks more dangerous than coffee. For caffeinated water, that concern is a moot point.

Some caffeinated water does have artificial ingredients.

If you’re trying to avoid this, read the label!

“Healthy” is a relative term but, with the simpler formula, caffeinated water is healthier than sugar-free Red Bull (for example). But being a healthy drink depends on the caffeine content, which brings us to the next big question.

Is Caffeinated Water Safe?

Don’t assume caffeinated water is safer than energy drinks because some brands of caffeinated waters have more caffeine per can than some brands of energy drinks. To be safe, it’s up to you to check the label and confirm the caffeine content is something you can handle. People have overdosed on pure caffeine powder – just because there’s no taurine or ingredients you can’t pronounce doesn’t mean it’s safe for you to drink.

For reference, the max amount of caffeine adults can have in one day is 400 mg caffeine total. The max per serving is 200 mg caffeine. [EFSA Guidelines]

Should You Drink Caffeinated Water?

If you’re looking for something that tastes more like water (meaning flavor is really weak, like cucumber or lemon in your water), caffeinated water is a good alternative to the stereotypical energy drink.

If you’re looking at a specific brand, ask yourself these 3 questions:

  1. Is the caffeine a good amount for me
  2. Does this contain any ingredients I’m trying to limit in my diet?
  3. Am I thirsty / Would a non-caffeinated water mix-in work just as well?

Now on to Part Two: Caffeine and Hydration

Love this info? Want to learn more?

I’ve researched the science and safety behind energy drinks and their ingredients since 2003. This book is the culmination of my research:

Need help with quitting caffeine?