For a short workout or moderate activity in the heat lasting under two hours, water and regular meals are often sufficient. CDC/NIOSH suggests balanced electrolyte drinks when sweating continues for several hours. When a product is useful, the right formula depends mainly on sweat loss, activity duration and the rest of your diet.
This comparison uses current manufacturer labels and public product pages checked on August 23, 2026. We did not purchase, taste or physically test these formulas; price, stock, packaging and sellers can change.
Four formulas for different needs
What each stick actually provides
| Product | Sodium | Potassium | Sugar |
|---|---|---|---|
| Nuun Sport Powder — Pink Lemonade | 300 mg | 150 mg | 1 g |
| Ultima Replenisher Original Variety — 20 sticks | 55 mg | 250 mg | 0 g |
| LMNT Watermelon Salt — 30 sticks | 1,000 mg | 200 mg | 0 g |
| Liquid I.V. Hydration Multiplier — Lemon Lime | 500 mg | 370 mg | 11 g |
Values per stick for the selected variant; check the package you receive because other flavors and product lines may use different formulas.
Formula comparison
Best lighter all-around formula
Nuun Sport Powder — Pink Lemonade
One stick mixes into about 16 fl oz (473 mL) and provides moderate sodium, 150 mg potassium, 25 mg magnesium and only 1 g added sugar without caffeine.
Best fit: Readers who want a middle-ground formula for longer workouts or hot conditions without a large sugar load.
Watch for: Many short sessions still need only water and regular meals. Other Nuun products and flavors can have different labels.
View current price and availability on Amazon — paid link ↗Best zero-sugar, low-sodium option
Ultima Replenisher Original Variety — 20 sticks
Each stick mixed into about 16 oz provides no sugar, 250 mg potassium and 100 mg magnesium, but only 55 mg sodium.
Best fit: People prioritizing flavor and minerals without sugar who are not trying to replace substantial sodium losses.
Watch for: Its low sodium may not match the goal of replacing heavy sweat losses. Kidney disease and some medicines change potassium safety.
View current price and availability on Amazon — paid link ↗Highest-sodium pick
LMNT Watermelon Salt — 30 sticks
A 6 g stick provides 1,000 mg sodium, 200 mg potassium and 60 mg magnesium with no sugar or caffeine.
Best fit: Individualized situations involving prolonged activity and substantial sweat loss—not an automatic everyday choice.
Watch for: One stick contains a large sodium dose. People limiting sodium or managing blood pressure, heart or kidney conditions need individualized advice.
View current price and availability on Amazon — paid link ↗Best with carbohydrate
Liquid I.V. Hydration Multiplier — Lemon Lime
One 16 g stick in about 16 oz provides 500 mg sodium, 370 mg potassium, 11 g added sugar and 50 calories.
Best fit: Longer activity when carbohydrate and electrolytes are both intentionally part of the plan.
Watch for: The added sugar and calories matter for everyday use. Sugar-Free and other product lines have different formulas.
View current price and availability on Amazon — paid link ↗How to choose by the label, not the claim
- Duration and sweat: start by asking whether the activity really requires anything beyond water and regular meals.
- Sodium: losses vary widely. A 55 mg formula and a 1,000 mg formula are not designed for the same context.
- Sugar: it can contribute carbohydrate during prolonged activity, but it matters when the drink is used routinely.
- Exact variant: do not assume another flavor, sugar-free version or caffeinated product has the same label.
- Cost per serving: compare stick count and serving size without relying on a fixed price—promotions and sellers change.
The better formula is the one that fits the actual situation and the rest of the diet—not the one with the largest numbers.
Safety: when electrolytes need extra care
Sodium, kidneys and medicines: One LMNT stick contains 1,000 mg sodium, about 43% of the general 2,300 mg daily limit cited by the American Heart Association for most adults. People limiting sodium or managing blood pressure, heart or kidney conditions need individualized advice. Kidney disease and medicines such as ACE inhibitors, ARBs and potassium-sparing diuretics can increase the risk of high potassium.
Supplemental magnesium can cause diarrhea, nausea or cramping and can interact with some antibiotics and osteoporosis medicines. Count what also comes from food, drinks and other supplements.
Electrolyte powders do not treat heat stroke or replace clinically indicated oral-rehydration therapy. Confusion, slurred speech, loss of consciousness, seizures or very high body temperature are emergency warning signs: call local emergency services and begin rapid cooling.
For lighter activity, see our guide to moderate-intensity walking.