The effect can depend on the amount consumed and the individual's tolerance.
If you notice that your stomach consistently feels uncomfortable after drinking coconut water, reducing the amount or avoiding it may help.
3. It Still Contains Calories and Sugar
Another common misconception is that coconut water is completely calorie-free.
It isn't.
Natural coconut water contains carbohydrates and naturally occurring sugars. Flavored or commercially sweetened coconut-water products may contain additional added sugar.
This matters if you're drinking multiple bottles every day while assuming they are equivalent to plain water.
For everyday hydration, plain water remains an excellent choice for most people.
Coconut water can be enjoyed as a beverage, but it doesn't need to replace water throughout the day.
When buying packaged coconut water, check the nutrition label and ingredient list.
4. People With Diabetes Should Pay Attention to Portions
Coconut water isn't necessarily forbidden for people with diabetes.
However, it contains carbohydrates that can contribute to blood-glucose levels.
The amount varies between products and serving sizes.
A person with diabetes should therefore consider coconut water as part of their overall carbohydrate intake rather than treating it as a completely carbohydrate-free drink.
Choosing an unsweetened product and paying attention to serving size can make a significant difference.
If you monitor your blood glucose, you can also observe how your body responds to the beverage.
5. It May Not Be the Best Choice for Everyone With Heart or Kidney Conditions
Because coconut water contains potassium and other electrolytes, people with certain medical conditions may need to be more cautious.
This is particularly relevant for individuals with:
- Chronic kidney disease
- Certain heart conditions
- Conditions associated with abnormal potassium levels
- Medical treatments that affect potassium
Some medications can also increase potassium levels.
For example, certain blood-pressure medications and potassium-sparing diuretics can affect how much potassium remains in the bloodstream.