A basic homemade electrolyte drink requires just three ingredients: water, salt, and sugar. Mixed in the right proportions, this combination replaces the sodium you lose through sweat and helps your body absorb fluid faster than plain water. You can make a reliable version in under two minutes with ingredients already in your kitchen.
Why the Ratio Matters
Electrolyte drinks work because of a specific mechanism in your small intestine: sodium and glucose together activate a transport system that pulls water into your bloodstream. Without sugar, the sodium just sits there. Without sodium, the sugar doesn’t trigger absorption efficiently. The ratio between them is what makes the drink functional rather than just flavored salt water.
The World Health Organization’s oral rehydration formula, used globally to treat dehydration, calls for 2.6 grams of salt and 13.5 grams of glucose per liter of water. That’s roughly half a teaspoon of salt and a little over a tablespoon of sugar per liter. This creates a solution your gut absorbs quickly without drawing extra water into your intestines, which would make things worse. Getting the concentration too high can cause nausea or diarrhea, essentially the opposite of what you’re trying to accomplish.
The Basic Kitchen Recipe
Start with one liter (about four cups) of water. Add:
- Half a teaspoon of table salt (roughly 1,150 mg of sodium)
- Two tablespoons of sugar (about 25 grams)
- Two tablespoons of lemon or lime juice (for flavor and a small amount of potassium)
Stir until the salt and sugar fully dissolve. That’s it. If you’re using this for exercise or mild dehydration from illness, this covers the basics. The sugar amount is slightly higher than the WHO formula, but it stays within a range your body handles well. If the drink tastes noticeably salty, you’ve added too much. It should taste mildly sweet with just a hint of salt.
For a version closer to what you’d buy at the store, you can also add a quarter teaspoon of salt substitute (potassium chloride, sold in the spice aisle) to bump up the potassium content. This is optional for general use but helpful if you’re sweating heavily or recovering from a stomach bug.
Which Salt to Use
Any salt works. Table salt, sea salt, kosher salt, and Himalayan pink salt are all at least 98% sodium chloride. The trace minerals in specialty salts are, as researchers at McGill University put it, “nutritionally irrelevant.” Pink salt gets its color from tiny amounts of iron, not from meaningful mineral content.
One thing to watch: grain size affects how much sodium you get per teaspoon. A quarter teaspoon of fine table salt contains about 590 mg of sodium, while the same measure of kosher salt contains around 480 mg because the larger flakes pack less densely. If you’re using kosher salt, be a little more generous. If you’re using fine table salt, stick to the measurements above.
Natural Ingredient Variations
If you’d rather skip the sugar-and-salt approach, coconut water makes a decent natural base. A single cup contains about 470 mg of potassium and 30 mg of sodium. That potassium content is solid, but the sodium is low for a true rehydration drink. Adding a small pinch of salt (an eighth of a teaspoon) to a cup of coconut water creates a more balanced profile.
Orange juice works as a potassium source too, though it’s higher in sugar than most people realize. A 50/50 mix of orange juice and water, with a pinch of salt stirred in, gives you potassium, some natural sugar for the absorption mechanism, and enough sodium to be functional. Honey can replace white sugar in the basic recipe at the same quantity. It dissolves best in warm water, so mix it first, then chill.
A Ginger Version for Nausea
When you’re making this for stomach illness and the thought of drinking anything sounds awful, try steeping a few slices of fresh ginger in hot water for five minutes. Remove the ginger, then dissolve your salt and sugar into the warm liquid. Let it cool. The ginger helps with nausea, and warm or room-temperature drinks are often easier to keep down than cold ones.
Flavoring Without Wrecking Your Teeth
Citrus juice makes electrolyte drinks taste better, but it’s worth knowing that citric acid erodes tooth enamel when the pH of a drink drops below 5.5. Commercial sports drinks often sit at a pH between 2 and 3, well into the range that causes visible enamel pitting and mineral loss. Research on sports drinks with high citric acid concentrations has shown surface irregularities and structural damage to enamel even with moderate exposure.
A couple tablespoons of lemon juice in a liter of water won’t bring the pH down nearly as far as a bottle of Gatorade. But if you’re sipping electrolyte drinks daily, keep a few things in mind: don’t swish the drink around your mouth, use a straw if convenient, and wait 30 minutes before brushing your teeth after drinking anything acidic (brushing while the enamel is softened does more harm than good). Alternatively, use a splash of fruit juice for flavor instead of straight citrus, or skip the acid entirely and add a few crushed berries or a small amount of fruit concentrate.
How Much to Drink
For exercise, aim to replace what you’re losing. A general starting point is 400 to 800 ml per hour of intense activity, adjusted based on how much you sweat. If you’re using this for illness recovery, small frequent sips work better than gulping large amounts, especially if vomiting is involved. A few tablespoons every five minutes is easier on the stomach than a full glass.
More is not better here. Overcorrecting with too many electrolytes can cause its own problems. Excess sodium or potassium leads to symptoms like confusion, irregular heartbeat, muscle weakness, and nausea. For healthy people replacing sweat losses or recovering from a mild bug, the recipes above are well within safe ranges. If you’re dealing with prolonged vomiting, diarrhea lasting more than a day or two, or a medical condition affecting your kidneys or heart, a store-bought oral rehydration solution with precise dosing is a safer choice than eyeballing it at home.
Storage and Shelf Life
Homemade electrolyte drinks don’t contain preservatives. Make what you’ll use within 24 hours and keep it refrigerated. The sugar content creates a friendly environment for bacteria at room temperature, so don’t leave a bottle sitting in your gym bag or on the counter overnight. If you want something ready to grab, you can pre-mix the dry ingredients (salt and sugar) in small bags or jars and just add water when you need them. The dry mix keeps indefinitely.