The 7 Best Electrolyte Supplements of 2021, According to a Dietitian

Replenish your electrolyte stores for optimal hydration

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Our Top Picks
This electrolyte blend contains zero grams of sugar and zero calories and is sweetened with organic stevia leaf.
It contains zinc, which supports intestinal absorption and transport of water and electrolytes.
This has calcium, magnesium, sodium, and chloride, with zero grams of sugar and zero calories.
They’re vegan, gluten-free, dairy-free, and flavored with natural fruit extracts.
Best for Everyday:
ZICO Coconut Water at Amazon
The electrolytes from this product come from a whole food and natural source—coconut water.
Each packet contains 25 calories and 4 grams of sugar, sweetened with organic stevia leaf extract and monk fruit extract.
Best Electrolyte Gels:
Huma Plus Chia Energy Gel at Amazon
This snackable electrolyte option is made with pureed fruit, coconut water, chia seeds, brown rice syrup, and sea salt.

Electrolytes—including sodium, potassium, calcium, chloride, phosphorus, and magnesium—are essential minerals that our body needs to maintain normal homeostasis. This means regulating fluid balance, pH levels, muscle contractions, and other vital functions. Our kidneys work to maintain adequate fluid and electrolyte balance, so for most healthy individuals, eating a balanced diet and consuming adequate water intake is sufficient to keep your hydration in check. However, some individuals may need an extra electrolyte boost.

Increased water intake and electrolyte supplementation may be indicated during periods of excess losses. For example, high-endurance athletes exercising vigorously for more than 60 minutes may benefit from increased water and electrolytes to replace what is lost through sweat. Overdid it at the bar? Alcohol is a diuretic, increasing urination which can lead to water and electrolyte loss as well. On the keto diet? Sodium is lost at a high rate during ketosis, and low electrolyte levels may lead to the dreaded "keto flu."

Here, the best electrolyte supplements:

Best Overall: Ultima Replenisher Electrolyte Hydration Powder

Ultima Replenisher

Ultima Replenisher Electrolyte Hydration Powder tops our list, containing all six electrolytes essential for optimal hydration. Gluten-free, dairy-free, sugar-free, and caffeine-free, they are well suited to a range of diet modifications.

This electrolyte blend contains zero grams of sugar and zero calories and is sweetened with organic stevia leaf and flavored with real fruit extracts. In addition to electrolytes, it also contains 110 percent of the recommended daily intake of vitamin C. They come in five flavors including, raspberry, lemonade grape, cherry pomegranate, and orange.

Ultima comes in two size options: a large tub or single-serve packets. These convenient packets are perfect for stashing in your bag when you are on-the-go and need an electrolyte boost—just mix one packet with 16 fluid ounces of water.

Best Budget-Friendly: Pedialyte Electrolyte Solution Unflavored

pedialyte-unflavored

Pedialyte is a tried and true electrolyte supplement that comes at an affordable price point. We like the unflavored version that comes with no artificial flavorings or colorings. This product does contain dextrose, a form of sugar, which can help to replenish energy stores but may not be your best pick if you are looking to reduce your added sugar intake. 

One serving (12 fluid ounces) of Pedialyte contains 35 calories and 9 grams of sugar, plus a mix of sodium, potassium and chloride. It also contains zinc, which supports intestinal absorption and transport of water and electrolytes.

Good to Know


Individual water and electrolyte needs are dependent on many factors, including your environment, activity level, diet, health status, and if you’re pregnant or breastfeeding. In general, healthy adults should aim to drink about 2 liters, or about eight 8-ounce glasses, of water a day and obtain electrolytes through a balanced diet including fruit, vegetables, whole grains, and protein. 

Best Keto-Friendly: Perfect Keto Electrolytes Hydration Powder Capsules

Very low carbohydrate diets—like the keto diet—can have a diuretic effect, so replenishing your water and electrolytes may help you to avoid the dreaded "keto flu." Perfect Keto Electrolytes Hydration Powder offers electrolyte supplementation without any added carbs or sugar so that you can stick to your daily intake goals.

Perfect Keto Electrolytes Hydration Powder comes in convenient capsules containing calcium, magnesium, sodium, and chloride with zero grams of sugar and zero calories. The only other added ingredients are gelatin (the capsule), L-Leucine, and organic rice extract. L-leucine is a branched-chain amino acid that supports recovery and performance by stimulating protein synthesis in muscle.

Best for Athletes: Nuun Sport Electrolyte Drink Tablets

Nuun sport electrolyte drink tablets

These convenient tablets are perfect for athletes looking to replenish electrolytes lost through sweat. They’re vegan, gluten-free, dairy-free, and flavored with natural fruit extracts. Plus, unlike many other sports powders packed with potentially harmful artificial sweeteners, they're sweetened with stevia leaf extract.

Need an extra boost during your workout? Try one of the flavors with organic green tea extract containing 40 milligrams of caffeine. 

Each tablet contains sodium, potassium, magnesium, and calcium with 15 calories, 1 gram of sugar. They come in 13 tasty flavors, so you’ll be sure to find one that suits your taste buds.

Best for Everyday: ZICO Coconut Water

Coconut water is a natural source of electrolytes, most notably potassium, and small amounts of calcium, magnesium, sodium, and phosphorus. Whenever possible, we like to get our electrolyte from whole food sources, so we love that the only ingredient in this product is coconut water.

One serving (11.2 fluid ounces) contains 70 calories and 13 grams of sugar with 490 milligrams of potassium (about the same amount that you’ll find in a medium-sized banana). The sweetness comes from the coconut's natural sugars, but if you are looking to cut your sugar intake, this one might not be your pick.

Best Tasting: Cure Hydration Mix

Made with organic coconut powder, pink Himalayan salt, and organic fruit flavors, Cure Hydration Mix is a great-tasting, clean, and effective electrolyte powder. Each packet contains 25 calories and 4 grams of sugar, sweetened with organic stevia leaf extract and monk fruit extract.

It comes in six flavors including, Endless Summer (watermelon), Wild Thing (mixed berry), Main Squeeze (lemon), Ruby Riot (grapefruit), Golden Hour (turmeric), and Laser Focus (matcha vanilla). Try Golden Hour for an anti-inflammatory boost of turmeric extract or Laser Focus for a caffeine kick from organic matcha powder.

Best Electrolyte Gels: Huma Plus Chia Energy Gel

If you’re looking for a snackable electrolyte option, try Huma Plus Chia Energy Gels. Made with pureed fruit, coconut water, chia seeds, brown rice syrup, and sea salt, these pack a powerful punch of energy and electrolytes. This is the perfect nutrition-packed packet to take with you on a long ride or run.

Each packet contains sodium, potassium, calcium, and magnesium with 100 calories and 13 grams of sugar. Flavors include Berries and Pomegranate, Blackberry Banana, Chocolate Raspberry, and Strawberry Lemonade.

Final Verdict

Ultima Replenisher Electrolyte Hydration Powder is an excellent choice for a complete electrolyte supplement with no added sugar or calories in convenient packets. Looking for an everyday electrolyte boost? Go for a bottle of ZICO.

What to Look for in Electrolyte Supplements

Electrolytes Included

The most important electrolytes for hydration and fluid balance are sodium and potassium—so look for a supplement that includes these two at a minimum.

Sugar

Many electrolyte-enhanced sports beverages contain a lot of sugar. Look for options with less than 15 grams of sugar per serving to keep your added sugar intake in check. If you are a high-endurance athlete, working out for extended periods of time, you may benefit from the added glucose intake to replenish your energy stores. 

Type

Choose a product that suits your preference and needs. Prefer a packable on-the-go option? Go with a powder or tablet. Prefer pre-made beverages? Try coconut water or Pedialyte

Over Supplementation 

Be careful of over-supplementation of electrolytes, especially calcium and sodium. Check out the NIH database for the Recommended Dietary Allowance (RDA) and Tolerable Upper Intake Levels (UL) for each mineral to make sure your intake falls within the recommended ranges. Certain disease states can cause increased sensitivity and complications associated with these minerals, so be sure to consult your physician if you have a pre-existing medical condition.

FAQs

Why may an electrolyte supplement be helpful for the keto diet? 

A very low-carbohydrate diet, like the keto diet, can lead to increased water losses from glycogen breakdown, which is stored carbohydrates (glucose). Each gram of glycogen retains two to three grams of water, so you naturally lose water with the depletion of these glycogen stores. This can lead to a loss of both water and electrolytes through urine. It may be beneficial to replete these losses with an increased water intake and electrolyte supplementation.

How do I know if I need to take an electrolyte supplement? 

Listening to your body is important to maintaining hydration, so tap into your thirst cues and be sure to drink up if you’re feeling parched. We lose water and electrolytes through urine, sweat, vomiting and diarrhea, which can lead to dehydration and electrolyte imbalances. If you are experiencing any of these in excess, replenishment may be indicated to avoid dehydration.

Dehydration symptoms include headache, dizziness, thirst, dry mouth, dark-colored urine, dry skin, and constipation. Dehydration can lead to serious health complications, so it is always best to consult your physician.

I practice intermittent fasting. Does an electrolyte supplement break my fast?

Technically, any food or beverage containing calories breaks a fast because you are providing your body with an energy source as opposed to burning stored energy. If you are looking for an electrolyte supplement that won’t break your fast, go for one that has zero calories and zero grams of sugar, such as Perfect Keto Electrolytes Hydration Powder.

What Experts Say

"Electrolytes are typically thought of as a tool for athletes, but they have a wide array of use. I recommend electrolytes, especially for pregnant women experiencing nausea and vomiting or who suffer from swelling. Electrolytes are helpful for anyone who spends a lot of time outside in the heat, or who suffer from dehydration-related headaches."—Eliza Savage, MS, RD, CDN

Why Trust Verywell Fit?

As a Registered Dietitian, Anne Carroll, MS, RD uses her clinical expertise to cut through marketing claims and get down to the science. These are all products that she has researched, vetted, and would recommend to her clients in private practice and incorporate into her own diet.

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Article Sources
Verywell Fit uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read our editorial process to learn more about how we fact-check and keep our content accurate, reliable, and trustworthy.
  1. NIH Office of Dietary Supplements. Dietary Supplement Fact Sheets.

  2. Taylor K, Jones EB. Adult dehydration. In: StatPearls. StatPearls Publishing; 2020.