Best Electrolyte Supplement for Runners 2026
Quick summary: Pick: LMNT (9.5/10). Price: verify at publish time (September 16, 2026).
Easy runs: water and meals.
I favor high sodium for heavy losses.
How We Evaluated
- Marathon: PMID 15829535. Weight gain linked to hyponatremia.
- Sweat: PMID 26070030. Sweat losses varied widely.
- Overdrinking: PMID 28316971. Overdrinking is a key risk.
Na/K/Mg: sodium/potassium/magnesium.
Top 4 Electrolyte Supplements of 2026
1. LMNT Zero Sugar Electrolytes, Watermelon Salt, 30 sticks
EDITOR’S CHOICERating: 9.5/10
What you get: Na/K/Mg: 1,000/200/60 mg/stick.
Value and quality context: verify at publish time.
For high sodium losses.
Often excessive; no fuel.
- Pros: Disclosed sodium; Portable sticks; Caffeine-free.
- Cons: High sodium; No carbohydrate.
2. Nuun Sport Hydration Citrus Fruit, 10 tablets
BEST PORTABLERating: 9.2/10
What you get: Na/K/Mg: 300/150/25 mg in 16 oz.
Value and quality context: HerbsPro: $54.17 on September 16, 2026, high versus other multi-packs; compare retailers.
Portable, moderate sodium.
- Pros: 300 mg sodium; Portable tube; Caffeine-free.
- Cons: High listed price; Little fuel.
3. Trace Minerals Max-Hydrate Endurance Citrus, 8 tablets
BEST FIZZRating: 9.0/10
What you get: Na/K/Mg: 150/200/50 mg/tablet.
Value and quality context: HerbsPro: $54.50 on September 16, 2026, high versus other multi-packs; compare retailers. Count: note 10, record 8; confirm.
Compact; low sodium.
- Pros: Disclosed minerals; Compact format; Mixes in water.
- Cons: Low sodium; GI-sensitive ingredients.
4. Thermotabs Buffered Salt Supplement, 100 tablets
BEST BUDGET TABLETRating: 8.8/10
What you get: Na/K/chloride: 180/15/287 mg/tablet.
Value and quality context: verify at publish time.
Account for water.
- Pros: 180 mg sodium; 100 tablets; Separate fuel.
- Cons: Needs water; Limited potassium.
Comparison Table
| Product | Form | Dose per serving | Count | Approximate price | Best for |
|---|---|---|---|---|---|
| LMNT Watermelon | Powder | 1,000/200/60 mg/stick | 30 sticks | verify at publish time | Salty sweaters |
| Nuun Sport Citrus | Fizz tablet | 300/150/25 mg in 16 oz | 10 tablets | $54.17 | Portability |
| Trace Max-Hydrate | Fizz tablet | 150/200/50 mg/tablet | 8 tablets | $54.50 | Fizz preference |
| Thermotabs | Salt tablet | Na/K/chloride 180/15/287 mg/tablet | 100 tablets | verify at publish time | Separate salt |
How to Choose a Electrolyte Supplement
Sweat losses vary; sodium dominates.
Long/hot runs: start at 300–600 mg sodium/500 mL. Drink to thirst; avoid overdrinking.
Check caffeine, fuel, dilution, sweeteners. Rehearse mixes; cramps have many causes.
Confusion/vomiting needs urgent care. Kidney/heart disease or sodium/fluid restrictions need clinician guidance.
Read general electrolyte powder guide and leg-cramp supplements.
This article is for information only and is not medical advice. Supplements can interact with medicines. Talk with a clinician before starting anything new, especially if you are pregnant, managing a condition, or taking prescription drugs. Prices and formulations change; the label is the final authority.
