Waterboy vs LMNT: sodium, sweeteners and cost compared
Label data checked . Amounts are per 12 fl oz of finished drink unless a table says otherwise.
Waterboy Workout Hydration and LMNT Zero-Sugar Electrolytes have about the same sodium per 12 fl oz (750 mg vs 750 mg). Neither has any sugar. LMNT Zero-Sugar Electrolytes costs less per liter as mixed ($3.17 vs $3.52 for Waterboy Workout Hydration).
Waterboy Workout Hydration vs LMNT Zero-Sugar Electrolytes, side by side
| Nutrient | Waterboy Workout Hydration | LMNT Zero-Sugar Electrolytes |
|---|---|---|
| Format | powder stick | powder stick |
| Drink volume | 12 fl oz (355 mL) | 12 fl oz (355 mL) |
| Calories | 8 kcal | 4 kcal |
| Carbohydrate | 0.8 g | 0.8 g |
| Sugars | 0 g | 0 g |
| Added sugars | 0 g | not on label |
| Sodium | 750 mg | 750 mg |
| Potassium | 300 mg | 150 mg |
| Magnesium | 38 mg | 45 mg |
| Calcium | 0 mg | not on label |
| Chloride | 1,133 mg | not on label |
| Caffeine | 0 mg | 0 mg |
| Nutrient | Waterboy Workout Hydration | LMNT Zero-Sugar Electrolytes |
|---|---|---|
| Format | powder stick | powder stick |
| Drink volume | 1 liter (33.8 fl oz) | 1 liter (33.8 fl oz) |
| Calories | 21 kcal | 11 kcal |
| Carbohydrate | 2.1 g | 2.1 g |
| Sugars | 0 g | 0 g |
| Added sugars | 0 g | not on label |
| Sodium | 2,114 mg | 2,114 mg |
| Potassium | 846 mg | 423 mg |
| Magnesium | 106 mg | 127 mg |
| Calcium | 0 mg | not on label |
| Chloride | 3,192 mg | not on label |
| Caffeine | 0 mg | 0 mg |
| Nutrient | Waterboy Workout Hydration | LMNT Zero-Sugar Electrolytes |
|---|---|---|
| Format | powder stick | powder stick |
| Drink volume | 16 fl oz (473 mL) | 16 fl oz (473 mL) |
| Calories | 10 kcal | 5 kcal |
| Carbohydrate | 1 g | 1 g |
| Sugars | 0 g | 0 g |
| Added sugars | 0 g | not on label |
| Sodium | 1,000 mg | 1,000 mg |
| Potassium | 400 mg | 200 mg |
| Magnesium | 50 mg | 60 mg |
| Calcium | 0 mg | not on label |
| Chloride | 1,510 mg | not on label |
| Caffeine | 0 mg | 0 mg |
Shaded cells mark more electrolytes, or less sugar and fewer calories. Carbohydrate and caffeine are not marked, since more or less depends on your use.
Waterboy Workout Hydration label checked . Source (opens in a new tab)
LMNT Zero-Sugar Electrolytes label checked . Source (opens in a new tab)
Sodium per liter
Sweat carries about 230 to 1,610 mg of sodium per liter[1]. Both gauges use the same scale, so the markers line up.
Cost per serving and per 1,000 mg sodium
| Measure | Waterboy Workout Hydration | LMNT Zero-Sugar Electrolytes |
|---|---|---|
| Price checked | $24.99 for 15-stick pouch | $45.00 for 30-count box of stick packs (one-time purchase) |
| Cost per serving | $1.67 | $1.50 |
| Cost per liter | $3.52 | $3.17 |
| Cost per 1,000 mg sodium | $1.67 | $1.50 |
Waterboy Workout Hydration price checked at Waterboy . Source (opens in a new tab)
LMNT Zero-Sugar Electrolytes price checked at LMNT . Source (opens in a new tab)
Sugar, sweeteners and caffeine
- No sugar sources in the ingredients. Sweetened with stevia.
- Waterboy Workout Hydration has no caffeine.
- 0.2% carbohydrate as mixed, which we estimate as hypotonic.
Ingredients
Pink Himalayan Salt, Potassium Citrate, Citric Acid, L-Glutamine, Magnesium Citrate, Natural Flavor, Vitamin C [Ascorbic Acid], Organic Stevia Leaf Extract, Vitamin B12 [Methylcobalamin].
- No sugar sources in the ingredients. Sweetened with stevia.
- Some LMNT Zero-Sugar Electrolytes flavors have caffeine (up to 50 mg per serving); the others have none.
- 0.2% carbohydrate as mixed, which we estimate as hypotonic.
Ingredients
Salt (Sodium Chloride), Citric Acid, Magnesium Malate, Potassium Chloride, Natural Lemon & Lime Flavors, Stevia Leaf Extract.
Which to pick
Each reason below is a measured difference in the label data.
Pick Waterboy if
- you want more potassium: 300 mg vs 150 mg per 12 fl oz
Pick LMNT if
- you want fewer calories: 4 kcal vs 8 kcal per 12 fl oz
- you want the option of a caffeinated flavor: up to 50 mg per serving
- you want the lower cost per liter: $3.17 vs $3.52
- you want the cheapest sodium: $1.50 vs $1.67 per 1,000 mg
Where to buy
Some links on this page are affiliate links. We may earn a commission if you buy, and it never changes the data or rankings. Affiliate disclosure.
Waterboy Workout Hydration
What the data can't tell you
- How they taste. We compare labels, not flavor.
- What they cost near you today. We checked Waterboy Workout Hydration at Waterboy on Sep 24, 2026 and LMNT Zero-Sugar Electrolytes at LMNT on Sep 24, 2026.
- How much sodium you lose. That depends on your sweat; the sweat rate calculator gives an estimate.
- Every flavor. LMNT Zero-Sugar Electrolytes lists different values for some flavors; this page uses the main label.
FAQ
Which has more electrolytes, Waterboy or LMNT?
Per 12 fl oz, Waterboy Workout Hydration has 750 mg sodium, 300 mg potassium and 38 mg magnesium. LMNT Zero-Sugar Electrolytes has 750 mg sodium, 150 mg potassium and 45 mg magnesium. Per liter that is 2,114 mg vs 2,114 mg sodium.
Do Waterboy and LMNT have sugar?
Waterboy Workout Hydration: 0 g sugar and 8 kcal per 12 fl oz, sweetened with stevia. LMNT Zero-Sugar Electrolytes: 0 g sugar and 4 kcal per 12 fl oz, sweetened with stevia.
Which is cheaper, Waterboy or LMNT?
Waterboy Workout Hydration worked out at $1.67 a serving, $3.52 a liter and $1.67 per 1,000 mg sodium (15-stick pouch at Waterboy, checked Sep 24, 2026). LMNT Zero-Sugar Electrolytes worked out at $1.50 a serving, $3.17 a liter and $1.50 per 1,000 mg sodium (30-count box of stick packs (one-time purchase) at LMNT, checked Sep 24, 2026). Prices change often, so treat these as a snapshot.
Does Waterboy or LMNT have caffeine?
Waterboy Workout Hydration has no caffeine. Some LMNT Zero-Sugar Electrolytes flavors have caffeine (up to 50 mg per serving); the others have none.