You can get electrolytes from everyday foods, certain beverages, and supplements. Most people get enough through a balanced diet without needing special products, but heavy sweating, illness, or restricted eating can tip the balance. Here’s how to keep your levels where they need to be.
What Electrolytes Actually Do
Electrolytes are minerals that carry an electric charge when dissolved in your body’s fluids. The main ones are sodium, potassium, magnesium, and calcium. Together, they keep your muscles contracting, your nerves firing signals, and your heart beating in rhythm. Sodium also regulates how much fluid your body holds, which is why you feel bloated after a salty meal and dehydrated after heavy sweating.
Foods That Cover the Basics
Whole foods are the most reliable and balanced source of electrolytes. Unlike drinks or supplements, they deliver multiple minerals at once along with fiber, protein, and other nutrients your body needs to absorb them well.
Potassium: bananas, avocados, potatoes, white beans, salmon, mushrooms, beet greens, and milk. Adults need about 4,700 mg of potassium per day, which is one of the harder targets to hit. A single baked potato with skin gets you roughly a quarter of the way there.
Magnesium: spinach, pumpkin seeds, almonds, lima beans, brown rice, and tuna. Women need 310 to 320 mg daily, while men need 400 to 420 mg depending on age. A handful of pumpkin seeds covers a significant chunk.
Calcium: milk, yogurt, cheese, tofu, spinach, and okra. The target for most adults is 1,000 mg per day, rising to 1,200 mg after age 50.
Sodium: most people get more than enough from table salt, bread, cheese, and processed foods. The upper recommended limit is 2,300 mg per day. Unless you’re sweating heavily or eating a very low-sodium diet, you rarely need to seek out extra sodium.
Drinks With Electrolytes
If you want electrolytes in liquid form, your options range from what’s already in your fridge to specialty sports drinks.
Coconut water is naturally high in potassium, delivering about 404 mg per cup, but relatively low in sodium at 64 mg per cup. That makes it a solid choice for general hydration but not ideal for replacing what you lose in sweat, which is mostly sodium.
Sports drinks like Gatorade flip that ratio: roughly 97 mg of sodium per cup but only 37 mg of potassium. They’re designed for exercise lasting longer than 45 minutes, when your body is losing sodium faster than potassium. For shorter workouts or casual hydration, they add sugar and calories you don’t need.
Milk, including chocolate milk, contains sodium, potassium, and calcium together. Johns Hopkins Medicine specifically recommends chocolate milk as a post-workout rehydration option because it combines electrolytes with sugar to help replenish muscle energy stores.
You can also make a simple electrolyte drink at home: water, a pinch of salt, a squeeze of citrus juice, and a small amount of honey. It won’t match the precise formulation of a commercial product, but it covers sodium and potassium at minimal cost.
When Supplements Make Sense
Electrolyte supplements come as powders, tablets, capsules, and dissolvable packets. They’re useful when food alone isn’t cutting it, such as during illness with vomiting or diarrhea, on very low-carb diets that flush sodium and potassium, or during prolonged heat exposure.
For magnesium specifically, the form matters. Organic forms like magnesium citrate and magnesium glycinate are more bioavailable than inorganic forms like magnesium oxide. That means your body absorbs a higher percentage of what you swallow. Absorption also increases when you take magnesium on an empty stomach, and more of the total amount gets absorbed at lower doses. So splitting your intake across the day works better than taking one large dose.
Electrolyte powder packets (brands like Liquid IV, LMNT, or Drip Drop) typically contain sodium, potassium, and magnesium in varying ratios. Check the label against what you’re actually short on. If you eat plenty of salty food but struggle to get enough potassium, a high-sodium packet may not help much.
Timing Around Exercise
For workouts under 45 minutes, plain water is enough. Your body has sufficient electrolyte reserves to handle moderate activity without extra supplementation.
Once activity stretches past 45 minutes, or if you’re exercising in heat, switching to a drink with electrolytes helps maintain performance and prevent cramping. The goal is to replace sodium lost through sweat, which can be substantial. Some people lose over 1,000 mg of sodium per hour during intense exercise in hot conditions.
After a long or intense session, rehydrating with something that contains both electrolytes and some carbohydrates helps your muscles recover faster. This is where sports drinks, chocolate milk, or an electrolyte powder mixed into a post-workout smoothie all work well. Endurance athletes doing events lasting several hours may benefit from higher-concentration electrolyte gels that pack more sodium and sugar per serving.
Signs You’re Running Low
Mild electrolyte deficiencies are sneaky. Low potassium and low sodium both start with vague symptoms like fatigue, weakness, and general sluggishness that are easy to blame on poor sleep or stress. Nausea and lethargy are common early signs of low sodium. Muscle weakness and constipation often show up with low potassium.
More severe depletion produces clearer warning signs. Significant sodium deficiency can cause dizziness, confusion, and unsteadiness. Severe potassium deficiency can lead to heart rhythm changes, muscle cramping, breathing difficulty, and mental fog. These levels of depletion are uncommon from diet alone. They typically result from prolonged vomiting, diarrhea, certain medications (especially diuretics), or medical conditions affecting the kidneys.
Can You Overdo It?
Yes. Your kidneys regulate electrolyte levels, but they can be overwhelmed. Too much of any single electrolyte can cause confusion, irregular heartbeat, breathing problems, nausea, muscle weakness, and fatigue. The symptoms of excess overlap significantly with the symptoms of deficiency, which makes self-diagnosing tricky.
The most common mistake is over-supplementing sodium or potassium while also getting plenty from food. If you eat a normal diet and add electrolyte packets to every glass of water throughout the day, you can easily exceed safe levels. Treat electrolyte supplements the way you’d treat any other supplement: use them when there’s a reason, not as a default. For most people eating a varied diet with fruits, vegetables, dairy or alternatives, and some salt, food handles the job on its own.