Water, black coffee, most teas, and clear sodas are among the lowest-potassium drinks available, generally coming in well under 200 mg per serving. That 200 mg threshold is the standard cutoff used by the National Kidney Foundation to separate low-potassium foods and beverages from higher-potassium ones. Whether you’re managing kidney disease or simply tracking your mineral intake, knowing where common drinks fall on the potassium scale helps you make confident choices throughout the day.
Water, Coffee, and Tea
Plain water contains almost no potassium and is the safest default. Brewed black coffee comes in at roughly 60 mg per cup, and brewed tea contains about 78 mg per cup, putting both firmly in the low-potassium category. The National Kidney Foundation lists coffee as low-potassium when limited to 8 ounces and tea when limited to 16 ounces. The concern isn’t that a single cup is high, but that potassium adds up if you drink several large mugs throughout the day.
Herbal teas vary slightly depending on the blend, but most fall in a similar range to black or green tea. The main thing to watch for is added fruit concentrates (like orange or banana flavoring), which can push the potassium count higher than you’d expect from a tea.
Sodas and Carbonated Drinks
Most regular and diet sodas are low in potassium, typically containing fewer than 50 mg per 12-ounce can. Lemon-lime sodas, ginger ale, and cola are all reasonable options from a potassium standpoint. However, some diet and sugar-free versions use potassium-based additives as sweeteners or acidity regulators. Acesulfame potassium (often listed as acesulfame K or ace-K on ingredient labels) is one of the most common artificial sweeteners in diet sodas. The amount of potassium it contributes per serving is small, but it’s worth being aware of if you’re monitoring closely.
Potassium-based preservatives and flavor enhancers are authorized for use in beverages and show up in a wide range of soft drinks and flavored waters. A quick scan of the ingredient list for anything with “potassium” in the name gives you a rough sense of whether hidden sources are present.
Sports Drinks and Flavored Waters
Standard sports drinks like Gatorade contain moderate potassium, roughly 110 to 130 mg per 12-ounce serving. That’s still under the 200 mg threshold for a single serving, but it climbs quickly if you’re drinking a full 32-ounce bottle during a workout. Sugar-free electrolyte drinks tend to have potassium levels comparable to or slightly higher than their sugared counterparts, so choosing a “zero calorie” version won’t necessarily lower your potassium intake.
Plain flavored waters and seltzer waters without added electrolytes are a better bet. Most contain negligible potassium. Just check the label: if the product is marketed for hydration or recovery, it likely has added electrolytes including potassium.
Milk and Milk Alternatives
Dairy milk is one of the higher-potassium beverages people drink regularly, at about 373 mg per 8-ounce glass. If you use milk in coffee, cereal, or smoothies, the potassium adds up fast. Plant-based alternatives vary widely:
- Rice milk: 77 mg per 8-ounce serving, making it the lowest-potassium option by a wide margin.
- Almond milk: 151 mg per 8-ounce serving, still under the 200 mg cutoff.
- Soy milk: 356 mg per 8-ounce serving, nearly as high as cow’s milk.
Rice milk and almond milk are the go-to swaps if you’re trying to keep potassium low. Coconut milk (the carton kind, not canned) also tends to be lower in potassium, though values vary by brand. Soy milk is essentially equivalent to dairy for potassium purposes and won’t save you much.
Juice and Fruit Drinks
This is where the biggest potassium surprises tend to hide. Orange juice delivers roughly 450 mg of potassium per 8-ounce glass. Tomato and vegetable juices are similarly high: standard V8 100% Vegetable Juice contains about 470 mg per 8 ounces, and the low-sodium version is even higher at 820 mg because potassium chloride replaces some of the sodium. Prune juice and pomegranate juice are also in the high range.
Some diluted juice drinks are much lower. V8 Splash varieties (Berry Blend, Fruit Medley, Strawberry Kiwi, Mango Peach) contain only 30 to 50 mg of potassium per 8 ounces because they’re mostly water and flavoring rather than concentrated juice. The “light” versions of V8 Fusion juices range from about 100 to 150 mg per serving. These are vastly different from 100% juice products, so reading labels carefully matters.
Apple juice and cranberry juice cocktail (not 100% cranberry juice) are also typically lower-potassium options, generally falling in the 100 to 150 mg range per 8 ounces. Grape juice runs higher, closer to 250 to 300 mg.
Drinks to Limit or Avoid
Coconut water is the single highest-potassium beverage most people encounter, packing about 600 mg per cup. That’s more potassium than a banana. It’s heavily marketed as a natural hydration drink, which makes it easy to consume in large amounts without realizing the potassium load. If you’ve been advised to limit potassium, coconut water is the first drink to cut.
Red wine contains about 187 mg per 5-ounce glass, which puts it right at the edge of the low-potassium cutoff. A second glass pushes you well over. Beer is lower at roughly 97 mg per 12-ounce serving. Distilled spirits like vodka, rum, and whiskey contain very little potassium on their own, though mixers can change the picture entirely. A vodka and cranberry cocktail is different from a vodka and orange juice.
Reading Labels for Hidden Potassium
Potassium wasn’t required on U.S. nutrition labels until 2020, so you may still encounter older products or smaller brands that don’t list it. When potassium does appear on the label, it’s shown in milligrams and as a percentage of daily value. The general daily guideline for adults is 4,700 mg, so a drink showing 5% daily value contains roughly 235 mg.
Ingredient lists are just as useful as the nutrition panel. Look for potassium chloride (a common salt substitute used in low-sodium drinks), potassium citrate, potassium sorbate, and acesulfame potassium. These individually add small amounts, but products that contain two or three potassium-based additives can have a higher total than you’d guess from the drink’s reputation as “just a soda” or “just flavored water.” When in doubt, plain versions of any beverage will almost always have less potassium than flavored, fortified, or “enhanced” versions.