A basic homemade electrolyte drink needs just three minerals (sodium, potassium, and magnesium), water, and something for flavor. Skip the sugar entirely by using a squeeze of citrus, a splash of unsweetened juice, or a pinch of flavored drink mix sweetened with stevia or monk fruit. The whole thing takes about two minutes to stir together and costs pennies per serving.
What Goes Into a Balanced Electrolyte Drink
The three electrolytes you lose most through sweat, exercise, or low-carb eating are sodium, potassium, and magnesium. A well-balanced serving contains roughly 200 to 800 mg of sodium, 150 to 300 mg of potassium, and 50 to 100 mg of magnesium. Sports scientists generally recommend a sodium-to-potassium ratio between 2:1 and 4:1 for hydration during physical activity. That ratio mimics what your body actually loses and helps your intestines absorb water efficiently.
You don’t need to hit these numbers perfectly every time. Think of them as a target zone. If you’re sipping throughout the day rather than chugging one bottle after a hard workout, landing on the lower end of each range per serving is fine.
The Base Recipe
This makes one 16- to 20-ounce serving:
- Water: 16–20 oz (about 500 ml), cold or room temperature
- Salt: ¼ teaspoon of sea salt or Himalayan pink salt (roughly 500–600 mg sodium)
- Cream of tartar: ¼ teaspoon (about 250 mg potassium)
- Magnesium citrate powder: ⅛ teaspoon, or follow the label for roughly 50–75 mg elemental magnesium
- Juice of half a lemon or lime
Stir or shake everything together until the powders dissolve. That’s it. The lemon covers the slightly salty taste and adds a small amount of potassium on its own. If you want it sweeter, add a few drops of liquid stevia, a pinch of monk fruit sweetener, or a tablespoon of unsweetened coconut water.
Why These Ingredients Work
Cream of tartar is a pantry staple (it’s the powder used in baking) that happens to be packed with potassium. One teaspoon contains about 495 mg of potassium, so a quarter teaspoon delivers roughly 125 mg, and a half teaspoon gets you closer to 250 mg. It dissolves easily in water, has almost no taste, and costs a few dollars for a jar that lasts months.
For salt, any variety works. Sea salt and Himalayan pink salt are both at least 98% sodium chloride. The trace minerals they contain (calcium, magnesium, potassium) are present at levels too low to make a nutritional difference. Regular table salt is equally effective for sodium. The only meaningful difference is that table salt typically contains added iodine, while sea salt and Himalayan salt do not. Use whichever you have on hand.
Magnesium citrate powder is sold in the supplement aisle and dissolves well in liquid. It’s the trickiest ingredient to dose because high amounts can cause diarrhea, nausea, and cramping. The NIH sets the upper limit for supplemental magnesium at 350 mg per day for adults, so keeping each drink at 50 to 100 mg leaves plenty of room, especially if you’re having more than one serving.
Flavor Variations Without Sugar
The base recipe is flexible. Once you have the mineral foundation, you can change the taste entirely.
- Citrus mint: Lemon juice, a few crushed fresh mint leaves, and a pinch of stevia. Let the mint steep for 5 minutes in warm water before adding ice.
- Berry: Replace lemon with 2 tablespoons of mashed fresh raspberries or a splash of unsweetened cranberry juice concentrate. Strain if you want a smooth drink.
- Cucumber lime: Muddle a few cucumber slices in the bottom of a glass, add lime juice and the electrolyte powders, then top with cold water.
- Warm broth style: Dissolve the salt and magnesium in a mug of hot water or bone broth. Skip the cream of tartar and citrus. This version works well in the morning or before bed when a savory drink feels more appealing.
If you find the saltiness hard to get past, start with a smaller amount (⅛ teaspoon) and work up. Cold water and citrus both mask the mineral taste better than warm water alone.
Adjustments for Keto and Low-Carb Diets
People on a ketogenic diet flush sodium and potassium at a much higher rate because low insulin levels cause the kidneys to excrete more of both minerals. The daily targets are significantly higher than for a standard diet: roughly 3,000 to 5,000 mg of sodium and 3,000 to 4,000 mg of potassium across all food and drink, plus 300 to 500 mg of magnesium. These numbers explain why “keto flu,” the headaches, fatigue, and muscle cramps that hit in the first week or two, is really just electrolyte depletion.
To meet those higher needs, you’ll likely want two or three servings of an electrolyte drink spread throughout the day in addition to salting your meals generously and eating plenty of non-starchy vegetables. A practical approach: make a large batch (multiply the base recipe by three) in a pitcher each morning and sip from it all day. You can also add a cup of broth or bouillon, which delivers roughly 800 to 1,000 mg of sodium per serving, as a separate “dose.”
Safety Limits to Keep in Mind
For most healthy adults with normal kidney function, the sodium and potassium in these drinks aren’t a concern. Your kidneys are very efficient at clearing excess potassium through urine, and no upper limit for dietary potassium has been set for healthy people. Supplement manufacturers cap potassium pills at 99 mg per dose as a regulatory precaution, but whole foods like bananas and potatoes routinely deliver 400 to 700 mg in a single serving.
However, potassium can become dangerous if your kidneys don’t excrete it normally. People with chronic kidney disease, type 1 diabetes, congestive heart failure, adrenal insufficiency, or liver disease are at higher risk for a condition where potassium builds up in the blood. Certain medications, particularly ACE inhibitors and potassium-sparing diuretics, also reduce the body’s ability to clear potassium. If any of these apply to you, talk with your doctor before adding potassium to your water.
Magnesium is the mineral most likely to cause noticeable side effects in a homemade drink. Keeping your supplemental intake under 350 mg per day (total from all supplements, not just your drink) avoids the cramping and digestive issues that higher doses can trigger. If you notice loose stools, cut the magnesium powder in half or skip it and get your magnesium from food instead.
Storing and Batch-Making
A single serving mixed fresh takes under two minutes, but if you want a batch ready in the fridge, combine the dry ingredients (salt, cream of tartar, magnesium powder) in a small jar and pre-measure individual portions into bags or small containers. When you’re ready, dump one portion into a water bottle, add citrus, shake, and go. The dry mix stores indefinitely in a sealed container at room temperature.
Once mixed with water and citrus, the drink keeps in the fridge for about 24 hours before the flavor starts to turn. There’s no food safety concern with longer storage, but the citrus develops a bitter, stale taste that makes it less pleasant to drink. If you add fresh mint or cucumber, use it within the same day.