14 electrolytes reviewed
Electrolyte products, compared on the numbers
These replace sodium, not carbohydrate, so the price that matters is cost per 1000 mg of sodium. It varies more than the marketing suggests: some tablets carry triple the sodium of others at a similar price. Potassium, calcium and magnesium are shown when a product declares them. Sort by dose, cost or score.
Full comparison
| Product | Sodium | Potassium | Calcium | Magnesium | Carbohydrate | Cost / 1000mg Na | Score |
|---|---|---|---|---|---|---|---|
| LMNT Citrus SaltLMNT | 1000 mg | 200 mg | 0 mg | 60 mg | 0 g | $1.50 | 75 |
| 4Endurance Electrolytes4Endurance | 250 mg | 70 mg | 10 mg | 50 mg | 0 g | $1.08 | 50 |
| Precision Fuel & Hydration PH 1500Precision Fuel & Hydration | 750 mg | 125 mg | 24 mg | 12 mg | 4 g | $1.60 | 50 |
| Skratch Labs Unsweetened Hydration Sport Drink MixSkratch Labs | 400 mg | 100 mg | 50 mg | 50 mg | 1 g | $4.13 | 45 |
| SiS GO HydroScience in Sport | 345 mg | 65 mg | 102 mg | 8.1 mg | 0.9 g | $2.17 | 44 |
| High5 Zero Electrolyte TabletsHigh5 | 250 mg | 70 mg | 9 mg | 56 mg | 0 g | $2.16 | 41 |
| Nuun SportNuun | 300 mg | 150 mg | 13 mg | 25 mg | 4 g | $2.50 | 37 |
| Nuun Sport + CaffeineNuun | 300 mg | 150 mg | 13 mg | 25 mg | 4 g | $2.50 | 37 |
| Precision Fuel & Hydration PH 1000Precision Fuel & Hydration | 500 mg | 130 mg | 20 mg | 10 mg | 3 g | $2.40 | 36 |
| GU Hydration Drink TabsGU Energy Labs | 320 mg | 55 mg | not declared | not declared | 3 g | $2.09 | 35 |
| Precision Fuel & Hydration PH 500Precision Fuel & Hydration | 250 mg | 130 mg | 20 mg | 10 mg | 3 g | $3.20 | 25 |
| Tailwind Rapid HydrationTailwind Nutrition | 320 mg | 90 mg | 30 mg | 10 mg | 12 g | $3.75 | 25 |
| PH 250Precision Fuel & Hydration | 125 mg | 125 mg | 24 mg | 12 mg | not declared | $5.36 | 24 |
| SiS GO ElectrolyteScience in Sport | 200 mg | 60 mg | 27 mg | 5 mg | 36 g | $6.25 | 17 |
Questions
It varies a lot between people and with heat. The scoring here treats 1000 mg an hour as the upper end of typical sweat loss; a sweat test is the only way to know your own number.
Electrolyte products replace sodium without the carbohydrate, so they suit anyone getting carbs from gels, or anyone who wants fuel and hydration in separate bottles. A drink mix does both in one bottle.
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