Short answer: If your crew sweats through their shirts, our pick is Fire Salt. One stick has 670 mg sodium, about 5 times the 135 mg in a Sqwincher Qwik Stik ZERO, per its label. It also has 190 mg potassium, 90 mg magnesium and 90 mg calcium, with 0 g sugar and 5 calories. Both are zero-sugar sticks, but Fire Salt is dosed for heavy sweat: one stick per hour of hard work.
Fire Salt publishes this comparison and ranks its own product first. Sqwincher figures come from the Qwik Stik® ZERO Nutrition Facts on sqwincher.com, checked October 13, 2026. Formulas vary by flavor.
Side by side
| Per stick | Fire Salt Essential Hydration | Sqwincher Qwik Stik ZERO |
|---|---|---|
| Sodium | 670 mg | 135 mg |
| Potassium | 190 mg | 110 mg |
| Magnesium | 90 mg | Not on label |
| Calcium | 90 mg | 0 mg |
| Sugar | 0 g | 0 g |
| Calories | 5 | 5 |
| Vitamin C | Not listed | 140 mg |
| Coconut water | Yes | No |
| Mix | 16–32 oz | 20 oz |
Why the sodium gap matters on a jobsite
Sodium is the main mineral you lose in sweat. OSHA says jobs longer than two hours in the heat need electrolyte drinks, because "water cannot replace electrolytes." For a full shift, eight Qwik Stik ZERO sticks add up to 1,080 mg sodium. Eight Fire Salt sticks add up to 5,360 mg. Scale it to how hard you're sweating, and talk to a doctor first if you're on a low-sodium diet.
Where Fire Salt wins
- About 5 times the sodium per stick (670 mg vs 135 mg).
- Magnesium and calcium, 90 mg each. Qwik Stik ZERO's label lists 0 mg calcium and no magnesium.
- Coconut water in all 11 flavors.
- Dosed for work. One stick is formulated to replace what the average person loses in about an hour of significant exertion.
- Caffeine and creatine versions with the same electrolyte base: Hydration + Caffeine (100 mg caffeine, $44.99 for 32) and Electrolytes + Creatine (5 g creatine monohydrate, $58.99 for 32).
- Every batch third-party tested before it ships, by a Salt Lake City-based, ISO 17025-accredited lab. See Quality & Testing.
- Crews and companies can buy in bulk. See bulk orders.
- HSA/FSA eligible. Choose HSA or FSA at checkout and pay with your HSA or FSA card. A letter of medical necessity is required, and your plan makes the final call. See HSA/FSA.
Sqwincher's strength, in one line
Sqwincher is built for workplace supply. Its site is organized around industrial, healthcare and foodservice buyers, and a Qwik Stik ZERO makes a 20 oz drink.
FAQ
How much sodium is in Sqwincher Qwik Stik ZERO?
135 mg per stick, per the Nutrition Facts on sqwincher.com, checked October 13, 2026. Fire Salt has 670 mg.
Is Sqwincher Qwik Stik ZERO sugar-free?
Yes, its label lists 0 g total and added sugars. Fire Salt also has 0 g sugar.
Does Sqwincher have magnesium?
The Qwik Stik ZERO label we checked doesn't list magnesium, and it lists 0 mg calcium. Fire Salt has 90 mg of each.
How many Fire Salt sticks for a 10-hour shift?
About one per hour of hard work, scaled to how much you sweat. Light hours may need less.
Related guides
- Best Electrolytes for Construction Workers and the Trades
- Trade guides: Roofers · Landscapers · Welders · Linemen · Warehouse workers
- Working in the Heat: A Jobsite Hydration Guide
- Fire Salt vs Gatorade
- Fire Salt vs DripDrop and Fire Salt vs Pedialyte
- Quality & Testing
- Shop Fire Salt Essential Hydration
Sources
- Sqwincher, Qwik Stik® ZERO Nutrition Facts: https://www.sqwincher.com/products/qwik-stik-zero/, checked October 13, 2026.
- OSHA, Water. Rest. Shade.: https://www.osha.gov/heat-exposure/water-rest-shade
Brand names are trademarks of their owners. Fire Salt is not affiliated with Sqwincher. Fire Salt is not intended to diagnose, treat, cure, or prevent any disease.
