Electrolyte Drinks: Do You Need Them?

Electrolyte drinks are marketed to everyone. Runners, gym fans, hot-weather walkers and tired parents all see the ads. Do you really need them? Here is a simple guide.

What are electrolytes?

Electrolytes are minerals that help your body stay balanced. Cleveland Clinic says they help keep fluid levels steady and support your heart rhythm, muscles and brain. The main ones are sodium, potassium and magnesium.

Do most people need extra?

No. Harvard's Nutrition Source says there is "no evidence that these are healthier choices than water for the average person." Harvard Health agrees. If you eat a balanced diet and do not do extreme exercise, you are probably getting all the electrolytes you need from food. Good food sources include leafy greens, beans, tofu, fruits and vegetables. Table salt also counts.

For exercise under an hour at an easy pace, water is the best pick, says Harvard's Nutrition Source. Cleveland Clinic's dietitian says "H2O will get the job done in most cases."

When might an electrolyte drink help?

• Long or hard exercise. Cleveland Clinic says to consider one if you exercise longer than an hour or at high intensity, or if you sweat a lot.
• Very hot weather. Harvard Health lists hot or humid climates and high altitude as times it can help.
• Physically demanding jobs. Think of a full day of outdoor work.
• Vomiting or diarrhea. Both Harvard sources say they can help when you are losing lots of fluid. For a sick child, Cleveland Clinic suggests an oral rehydration solution like Pedialyte.

In August 2026, a review in the journal Nutrients looked at eating and drinking during heatwaves. The authors say regular water, water-rich foods, less alcohol and fewer sugary drinks are supported by good reasoning. They also say that replacing electrolytes should be tailored to each person during long or heavy sweating. They note that direct studies in heatwaves are still limited. Older adults, children, pregnant women and people with chronic diseases need extra care in the heat.

What to watch on the label

• Sodium. Cleveland Clinic says many sports drinks have 250 milligrams or more. That is more than 10 percent of the usual daily limit.
• Sugar. Cleveland Clinic says sugar-sweetened sports drinks used as everyday drinks add extra calories. Harvard Health warns that many have a lot of sugar. Harvard's Nutrition Source also notes some are high in caffeine.
• Too much is not better. Cleveland Clinic says taking in extra electrolytes is possible and not helpful.

Who should check with a doctor first

• If you have kidney disease, Harvard's Nutrition Source says to limit extra salt and potassium.
• If you have diabetes or high blood pressure, sugar and sodium are bigger concerns, says Harvard Health.
• If you take medicines for your heart or blood pressure, ask your doctor or pharmacist before using electrolyte products often.

Simple swaps

For a hot day, eat watermelon, oranges or a banana. Add a salad with spinach. Drink water through the day. If you are sick, sip small amounts of fluid and call your doctor if you cannot keep fluids down.

A homemade option

Harvard's Nutrition Source shares a recipe that makes about 1 liter: 3 and a half cups of water, a half teaspoon of salt, 2 to 3 tablespoons of honey or sugar and 4 ounces of unsweetened 100 percent orange juice or coconut water. Mix well and chill. This is for sweaty days, not for everyday sipping.