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Nuun Sport Electrolyte Tablets
#1 — Best Overall

Nuun Sport Electrolyte Tablets Review (2026)

300mg sodium, 1g sugar, 10 uses in a 1.5oz tube — the hiking electrolyte the AT runs on

★★★★★
9.2/10
Reviewed by William • Updated May 2026 $8

Nuun Sport is the hiking electrolyte I carry on every warm-weather trip. One tablet in a 16oz water bottle provides 300mg sodium, 150mg potassium, and 25mg magnesium at only 1g of sugar — the right profile for replacing what sweating takes without loading you with unnecessary sugar. At $8 for 10 tablets, a summer of weekend hiking costs less than two lattes. Consistent use prevented quad cramping that previously started around mile 7 on comparable hot days.

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$8 retail
TrailCraft Score

What I Liked

  • 300mg sodium — the correct dose for hiking electrolyte replacement
  • 150mg potassium and 25mg magnesium — comprehensive
  • Only 1g sugar — not a sugar drink
  • $8 for 10 tablets — exceptional value
  • Dissolves in 2 minutes in any temperature water
  • Widely available at REI and running stores

Limitations

  • Some flavors better than others — try before buying bulk
  • Effervescent tablet takes 2 minutes to dissolve
  • Not as portable as packets for non-standard containers

At a Glance

Sodium300mg per tablet
Potassium150mg
Magnesium25mg
Sugar1g
Calories10
Tube10 tablets, 1.5oz

Score Breakdown

Electrolyte Profile
9.6
Taste
9.0
Value for Money
9.7
Convenience
9.2
Low Sugar
9.9

Field Notes

Standard on all AT day hikes May through September. One tablet per bottle at the trailhead, one at the halfway refill on full days. 10-mile Shenandoah day at 85°F: no cramping. Without Nuun on comparable days previously: quad cramping at mile 7. Consistent outcome across multiple seasons.

300mg sodium, 1g sugar, 1.5oz for 10 uses — fits in a pocket and actually prevents the cramping

Who This Is For

Nuun Sport is right for: any hiker doing 2+ hours in warm weather, AT section hikers who sweat heavily, and anyone who has experienced mid-hike cramping that was actually electrolyte loss.

Note: Prices are current as of May 2026. Some links are affiliate links.

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Common Questions

How to use Nuun Sport for hiking?
One tablet per 16oz of water. Wait 2 minutes. Drink throughout the hike. One per 12oz in very hot conditions.
Nuun vs Gatorade?
Gatorade: 110mg sodium, 21g sugar. Nuun: 300mg sodium, 1g sugar. For hiking you need electrolytes, not a sugar drink.