The verdict, first
These two barely compete — they solve different problems. LMNT delivers 1,000 mg of sodium per serving with no sugar, built for heavy sweat and low-carb diets, and scored 70/100. Nuun Sport is a light, portable effervescent tablet with 300 mg sodium, a splash of minerals and about 1 g of sugar, at just $0.75 a serving. If you’re replacing serious salt loss, LMNT is the higher-scoring, higher-dose pick.
Nuun’s real advantages are format and price. A tube of tablets drops in a bag or pocket, dissolves in any bottle, tastes lighter, and costs half as much per serving. For everyday hydration, a short workout, or travel, 300 mg of sodium is plenty and the portability is genuinely useful. You’re not buying a worse LMNT — you’re buying a different tool.
The comparison table
| What we checked | LMNT Electrolyte Drink Mix | Nuun Sport Electrolyte Tablets |
|---|---|---|
| Price | $45.00 / 30 sticks | $7.49 / 10 tablets |
| Cost per serving | $1.50 | $0.75 |
| Sodium | 1,000 mg | 300 mg |
| Potassium | 200 mg | 150 mg |
| Magnesium | 60 mg | 25 mg |
| Added sugar | 0 g | ~1 g |
| Format | Powder stick, mix in water | Effervescent tablet, drops in any bottle |
| Amounts disclosed | All electrolytes stated | All electrolytes stated |
| Relationship to this site | None — no affiliate relationship | None — no affiliate relationship |
| Our score | 70/100 — full review | 54/100 — full review |
| Facts checked | 2026-07 | 2026-07 |
Spot a change on either label? Tell us and we’ll re-verify on the record.
The dose gap is the whole story
LMNT’s 1,000 mg sodium and Nuun’s 300 mg are more than three times apart, and that’s by design. LMNT is formulated for people who lose a lot of salt and want to replace it aggressively; Nuun is formulated for light, frequent use where a gentler dose won’t leave a briny taste. Both disclose every electrolyte, which is the bar we hold — the difference is intent, not honesty.
If you’ve ever finished an LMNT and found it too salty, that’s the 1,000 mg talking, and Nuun will feel far more drinkable. If you’ve finished a Nuun after a long hot session and still felt flat, that’s the 300 mg, and LMNT is the fix.
Format and price: where Nuun earns its place
A Nuun tube is about the size of a lip-balm stack — ten tablets you can carry anywhere and drop into any water bottle without a scoop or a torn packet. At $0.75 a serving it’s the cheapest option in our electrolyte set. LMNT’s sticks are portable too, but the powder is messier and costs twice as much.
For a desk, a gym bag, or a carry-on, Nuun’s convenience is real. For a marathon or a sauna habit, LMNT’s dose is what you’re paying for.
Which one fits you
LMNT makes more sense if…
- You lose a lot of salt — endurance, sauna, keto or fasting
- You want zero sugar and the highest disclosed sodium dose
- A higher overall score on formula and transparency matters (70 vs 54)
Nuun Sport makes more sense if…
- You want light, everyday hydration and a gentler, more drinkable taste
- Portability matters — tablets that live in a bag and drop in any bottle
- You’d rather pay $0.75 a serving and don’t need a big sodium dose
Where to find them
Both links are plain Google searches — we have no affiliate relationship with either brand on this page and earn nothing from these buttons. Prices carry the date we checked them and change often.
Frequently asked questions
Is LMNT or Nuun better for hydration?
It depends on sweat. LMNT’s 1,000 mg sodium suits heavy losses (endurance, sauna, keto); Nuun’s 300 mg suits light, everyday use. Both disclose their minerals, so match the dose to your day.
Which is cheaper?
Nuun, at $0.75 a serving versus LMNT’s $1.50 — half the cost. Nuun’s tablet format is also more portable.
Does Nuun have sugar?
About 1 g per tablet — far less than sugar-driven mixes, but not zero. LMNT has none, which is why it fits keto and fasting cleanly.
Which scored higher?
LMNT, 70/100, versus Nuun Sport at 54/100 — mostly on sodium dose and formula. Nuun’s strengths are price and portability rather than raw dose.
Sources
- LMNT — Supplement Facts and product page (1,000 mg sodium, 200 mg potassium, 60 mg magnesium). Checked July 2026.
- Nuun Sport — Supplement Facts (300 mg sodium, 150 mg potassium, 25 mg magnesium, ~1 g sugar). Checked July 2026.
- The Ingredient Report — LMNT review, 70/100 (facts checked July 2026).
- The Ingredient Report — Nuun Sport review, 54/100 (facts checked July 2026).
- 2026-07-19 — Page published. Both labels verified this date.
This comparison is for informational purposes and is not medical advice. Medical disclaimer.