Nuun Sport Electrolyte Tablets Review
Nuun Sport is an electrolyte-rich sport hydration tablet designed to fuel an active lifestyle. According to the page, it is enhanced with electrolytes and offers a natural, low-calorie fruity flavor that mixes easily with water to make a hydrating beverage for workouts. Each Nuun Sport tube contains 10 individual tablet servings that can be taken up to 3 times per day. The formula contains five essential electrolytes: sodium, which is described as key for rehydration; potassium, which regulates healthy hydration balance; magnesium, which maintains muscle, nerve, and cell function; calcium, which helps maintain proper hydration; and chloride, which maintains proper pH levels. The product page states that Nuun Sport is designed with complete electrolytes and non-GMO ingredients for clean, guilt-free hydration. Benefits listed include no artificial flavoring or sweeteners, since the tablets are sweetened only with high-quality stevia, and the product is keto-friendly. The nutrition panel lists per serving of one 5 gram tablet: 15 calories, 0 grams fat, 300 milligrams sodium (13% DV), 4 grams total carbohydrate, 1 gram total sugars including 1 gram added sugars, 0 grams protein, 13 milligrams calcium, 150 milligrams potassium, 25 milligrams magnesium, and 40 milligrams chloride. The page describes the tablets as useful for workouts and for work days, and suggests keeping a tube in a gym bag, car, purse, hiking pack, or anywhere a replenishing drink may be needed. Badges shown include vegan, kosher, gluten-free, and non-GMO certifications. Directions say to drop one tablet into 16 fl oz of water, wait a few minutes for it to dissolve, with ice suggested to speed dissolving, then sip and enjoy. The page notes a flavor selection including Strawberry Lemonade, Citrus Fruit, Watermelon, Fruit Punch, Grape, Lemon Lime, Orange, Tri-Berry, Tropical, and Peach, though the current listing is out of stock and the page shows a price of $7.49 with a per-serving price of $0.75. A subscription option offers 15 percent savings, and an 8-tube box of 80 tablets is also offered. The page includes a 60-day satisfaction guarantee and a footnote stating the product has 1 gram of total sugars per 16 fl oz compared with 11 grams in a leading electrolyte drink mix. The page also states that these statements have not been evaluated by the Food and Drug Administration and that the product is not intended to diagnose, treat, cure, or prevent any disease.
Study, Trial or Testing Result Summary
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Supplement Facts
Total Carb. 4 g · Incl. 1g Added Sugars 1 g · Calcium 13 mg
| Calories | 15 | |
| Total Fat | 0 g | 0% |
| Sodium | 300 mg | 13 % |
| Total Carb. | 4 g | 1% |
| Total Sugars | 1 g | |
| Incl. 1g Added Sugars | 1 g | 2% |
| Protein | 0 g | |
| Calcium | 13 mg | 2% |
| Potas. | 150 mg | 4% |
| Magnesium | 25 mg | 6% |
| Chloride | 40 mg | 2% |
Other ingredients: Citric Acid, Dextrose, Sodium Bicarbonate, Potassium Bicarbonate, Sodium Carbonate, Less Than 2% Of Natural Flavor, Potassium Chloride, Magnesium Oxide, Calcium Carbonate, Stevia Leaf Extract, Avocado Oil, Beet Juice (For Color).
Directions: Drop one tablet into 16 fl oz of water. Wait a few minutes for the tablet to dissolve. Sip, savor, and enjoy Nuun Sport hydration! Can be taken up to 3 times per day.
Label source: Nuunlife · Report a label change
Where to Buy
Nuun · Amazon · Rei
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Graded October 26, 2026 by the Reverse Age Lab evidence engine, from human studies, real reviews and our biohacker panel. How we grade. Is this medical advice? No. Rala organizes the published evidence; go over any change with your doctor, especially if you take meds.

