Best Electrolyte Drink Mixes for Hot Days (2026)
When plain water is enough and when to add electrolytes, per NIOSH heat guidance, with five drink mixes compared on label facts: sodium, sugar and water per serving.
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Quick answer
Drink plain water for most of a hot day, and add Nuun Sport tablets once you have been sweating for a couple of hours: 300 mg sodium and 1 g sugar per 16 oz, per Nuun. For a crew's cooler, Gatorade's 76.5 oz canister makes 9 gallons of the sports drink NIOSH describes.
Our picks
- Long, sweaty days outsideNuun Sport Electrolyte Tablets, Mixed Flavors, 6 Pack (60 Servings)From the listing · not tested
- A crew's water coolerGatorade Thirst Quencher Powder, Lemon Lime, 76.5 ozFrom the listing · not tested
- Single servings in a packGatorade Thirst Quencher Powder Sticks, 3 Flavor Variety Pack, 30 PackFrom the listing · not tested
On a hot day outside, water does most of the work and electrolytes matter only once you have been sweating for hours. This page is for hikers, anglers and outdoor workers deciding when to reach for a drink mix and which one, using the National Institute for Occupational Safety and Health's (NIOSH) hydration guidance and nothing more than what is on each label.
How we chose: we did not test these products; we set the timing by NIOSH's heat-stress guidance, compared only the nutrition facts each maker publishes, and kept only mixes sold by Amazon.com or the brand's own store and in stock on September 29, 2026.
Five drink mixes side by side
| Drink mix | Form | Water per serving | Sodium | Sugar | Sold by | Amazon price |
|---|---|---|---|---|---|---|
| Nuun Sport | Tablet | 16 fl oz | 300 mg | 1 g | Amazon.com | $32.72 (Amazon, as of Sep 29, 2026, 5:20 PM UTC)Check price |
| Gatorade Powder, 76.5 oz | Canister | Makes 9 gallons | Not on listing | Not on listing | Amazon.com | $15.98 (Amazon, as of Sep 29, 2026, 5:20 PM UTC)Check price |
| Gatorade Powder Sticks | Stick | Not on listing | Not on listing | Not on listing | Amazon.com | $24.74 (Amazon, as of Sep 29, 2026, 5:20 PM UTC)Check price |
| LMNT Citrus Salt | Stick | 16–32 oz | 1,000 mg | 0 g | Drink LMNT | $45.00 (Amazon, as of Sep 29, 2026, 5:20 PM UTC)Check price |
| Liquid I.V. Lemon Lime | Packet | 16 oz | Not on listing | Not on listing | Liquid I.V. | $24.00 (Amazon, as of Sep 29, 2026, 5:20 PM UTC)Check price |
Prices are Amazon's, as of the time shown, and subject to change. Details
Nuun's figures are from its Nuun Sport page and LMNT's from its product page. Where the listing gives no number, the Nutrition Facts panel on the package has it.
When water is enough
NIOSH's workplace recommendations for heat stress are the clearest numbers we found for anyone working or hiking in heat: "For moderate activities in the heat that last less than 2 hours, drink 1 cup (8 oz.) of water every 15–20 minutes." That is 24 to 32 oz an hour, a standard bottle, and it is plain water.
The same page says to "avoid alcohol and drinks with high caffeine or sugar." A cooler full of soda is not hydration.
When to add electrolytes
"If sweating lasts for several hours, drink sports drinks containing balanced electrolytes," NIOSH says on the same recommendations page. Its page on heat-related illness explains why: heavy sweating "depletes the body's salt and moisture levels," and water alone puts back only the second.
That is the moment for a tablet, a stick or a jug of sports drink: a long trail day, a full day on an open boat, or a work shift in the sun. For a two-hour walk, you do not need one.
A 16 oz serving at NIOSH's pace lasts about half an hour to 40 minutes. You do not need every bottle to be an electrolyte drink; you can alternate with plain water through the day.
Don't overdo it
NIOSH also sets a ceiling: "Generally, fluid intake should not exceed 6 cups per hour." That is 48 oz, three 16 oz bottles an hour at most, whatever is in them.
The ceiling matters most on long, hot days, when it is tempting to drink more to be safe. Pace your drinking through the hours instead of catching up all at once.
Reading the label: sodium, sugar and servings
The mixes here split into two kinds:
- Sports drinks with carbohydrates (Gatorade). The Gatorade listings describe "electrolytes and carbohydrates," which matches NIOSH's advice for heat cramps: water and "a snack or a drink that replaces carbohydrates and electrolytes (such as sports drinks) every 15 to 20 minutes." The listings give no sodium or sugar figures, and NIOSH also says to avoid drinks high in sugar, so check the panel.
- Low- or no-sugar electrolyte mixes (Nuun, LMNT). Nuun Sport gives 300 mg sodium and 1 g sugar per 16 oz tablet. LMNT gives 1,000 mg sodium per stick with no sugar, over three times Nuun's sodium, which LMNT says you can spread across 16 to 32 oz of water.
Liquid I.V.'s listing claims "3x the electrolytes of the leading sports drink" without giving the milligrams, so read its Nutrition Facts before comparing it with the others.
Salt tablets and medical conditions
NIOSH is specific on salt tablets: for heat cramps, "avoid salt tablets." A drink mix puts measured sodium in water instead.
The same NIOSH page says to get medical help for heat cramps if the person "has heart problems," "is on a low sodium diet," or has cramps that do not ease within an hour. If you are on a low-sodium diet, a 1,000 mg LMNT stick is a question for your doctor, not for this page.
Which one we would buy
Buy Nuun Sport if you want an electrolyte you can drop into your own bottle after a couple of hours of sweating. It gives its sodium and sugar on its page, and a tube fits anywhere.
Buy Gatorade powder by the canister to mix a jug for a crew, or the sticks for single bottles, if you also want carbohydrates.
Buy LMNT if you sweat heavily for hours and have no reason to limit salt. Buy Liquid I.V. if you want a packet with B vitamins and have read its panel.
Shade and cooling do the rest. See our guides to cooling towels and neck gaiters and UPF sun shirts and hoodies.
If someone becomes confused, slurs their speech or faints, treat it as heat stroke: the National Weather Service's heat illness page says to call 911 and not to give fluids. For heat exhaustion that gets worse or lasts over an hour, see a doctor.
Our picks, in order
Ranked in the order we recommend them, from listings, certifications and standards. Where a price appears it is Amazon's, with the time it was read.
Long, sweaty days outside
Nuun Sport Electrolyte Tablets, Mixed Flavors, 6 Pack (60 Servings)
From the listing · not testedBuy it as the electrolyte you add to your own water bottle after the first couple of hours.
Pros
- + Per tablet: 300 mg sodium, 150 mg potassium, 1 g sugar and 15 calories in 16 fl oz, per Nuun
- + Five electrolytes: sodium, potassium, chloride, magnesium and calcium, per the listing
- + Tubes of 10 tablets that ride in a pack or a boat bag
Cons
- - 4 g of carbohydrate per tablet, per Nuun, so it is not also a snack the way a sports drink is
A crew's water cooler
Gatorade Thirst Quencher Powder, Lemon Lime, 76.5 oz
From the listing · not testedBuy it to mix by the jug for a work crew or a team on a long hot day.
Pros
- + 76.5 oz of powder makes 9 gallons, per the listing
- + Electrolytes and carbohydrates, the combination NIOSH describes for replacing what sweat takes
Cons
- - The listing gives no sodium or sugar figures; read the Nutrition Facts panel
- - It is a sugared drink, and NIOSH says to avoid drinks high in sugar
Single servings in a pack
Gatorade Thirst Quencher Powder Sticks, 3 Flavor Variety Pack, 30 Pack
From the listing · not testedBuy it if you want a sports drink with carbohydrates one bottle at a time.
Pros
- + Ten sticks each of Fruit Punch, Orange and Lemon Lime, per the listing
- + Electrolytes plus carbohydrate energy, per the listing
Cons
- - No nutrition figures on the listing
Heavy sweaters, by the stick
LMNT Zero Sugar Electrolytes, Citrus Salt, 30 Count
From the listing · not testedBuy it if you sweat hard for hours and your doctor has no reason to limit your salt.
Pros
- + Per stick: 1,000 mg sodium, 200 mg potassium and 60 mg magnesium, with no sugar, per LMNT
- + Mix with 16 to 32 oz of water, per the listing
Cons
- - The most sodium here by far; not for anyone told to limit salt
A packet with B vitamins
Liquid I.V. Hydration Multiplier, Lemon Lime, 16 Count
From the listing · not testedBuy it if you want a single-serve packet and have read its Nutrition Facts first.
Pros
- + One packet in 16 oz of water, per the listing
- + The listing claims 3x the electrolytes of the leading sports drink and 100% of the daily value of four B vitamins
Cons
- - The listing gives no sodium or sugar figures; this version is not the sugar-free one
Frequently Asked Questions
Is coconut water or juice as good as a sports drink?
Not by NIOSH's measure. NIOSH asks for sports drinks "containing balanced electrolytes" once sweating lasts hours, and says to avoid drinks high in sugar; check any drink's sodium and sugar on its label before counting it.
Should kids use electrolyte mixes on hot days?
The CDC's advice for heat and athletes is to "drink more water than usual, and don't wait until you're thirsty." For a child's specific needs, follow the label and ask a pediatrician.
Do energy drinks count toward hydration?
No. NIOSH says to avoid drinks with high caffeine or sugar in the heat, which rules out most energy drinks. Nuun sells a caffeinated Sport version; the one on this page is the plain Nuun Sport.
Proof
Sources
Everything this guide relies on, as linked in the text. Last checked September 29, 2026.
- nuunlife.com: Nuun Sport page
- drinklmnt.com: Lmnt recharge electrolyte drink
- Centers for Disease Control and Prevention: INDEX page
- Centers for Disease Control and Prevention: Page on heat-related illness
- National Weather Service: Heat illness
- Centers for Disease Control and Prevention: Heat and athletes
WildProofLab is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. Nutrition figures are from each maker's page or listing. This page is general information, not medical advice.
Amazon prices and availability change often; cards with a live Amazon price show when it was last checked. As an Amazon Associate I earn from qualifying purchases.
