Electrolyte Overload: 8 Common Sports Drinks Quietly Harming Your Kidneys

3. BodyArmor and coconut-water-style drinks — potassium considerations

Drinks that promote themselves as "natural" or "potassium-rich," including some coconut-water-style beverages and products like BodyArmor, can be attractive because they offer a milder flavor and a nutrient angle. Potassium is an essential electrolyte for muscle function and heart rhythm. Most healthy kidneys manage potassium balance well. But if kidney function is reduced, the body may struggle to remove excess potassium. Elevated blood potassium can be serious and affect heart rhythm. That doesn’t mean these drinks are bad for everyone. For many people, a moderate amount of potassium-containing beverage can be part of a healthy routine—especially after heavy sweating. The caution is for people with known kidney disease, those taking medications that raise potassium (like certain blood-pressure drugs), or anyone told to follow a low-potassium diet. The safest approach is to check labels, be mindful of servings, and review potassium intake with a clinician if you have risk factors for impaired kidney clearance.

4. Vitaminwater — hidden sugars and additives

Enhanced flavored waters, such as Vitaminwater, often advertise vitamins and electrolytes. They can seem like a healthier daily choice, but many versions contain added sugars and flavoring agents that push up calorie and sugar intake. Excess sugar contributes to poorer blood-sugar control and weight gain, both of which are risk factors for kidney disease over time. Additionally, some of these bottled beverages include preservatives and acidifying agents that may affect dental health and metabolic balance. For people trying to manage kidney risk, the main point is label literacy. A drink that sounds healthy can still contain added sugars or unnecessary additives. Choose unsweetened options where possible and reserve fortified or sugary beverages for times when they serve a clear purpose—such as replacing carbohydrates after prolonged strenuous activity. If you’re concerned about long-term kidney health, swap sugary flavored drinks for water, unsweetened sparkling water, or a clinician-approved low-sugar electrolyte option.