Best Electrolyte Powder No Sugar: Top 5 Picks for Hikers

If you've ever mixed an electrolyte packet on a hot afternoon and it tasted like watered-down soda, you already know why some hikers look for an electrolyte powder no sugar instead. Sugar isn't the enemy on the trail, but it's often extra calories and extra sweetness you didn't ask for.

Unlike our hiker's guide to electrolytes that explains why sodium goes first, this one compares real no-sugar and zero-sugar electrolyte powders label by label, explains what "no sugar" actually means when a brand prints it on the front of the package, and looks at what the research says about whether skipping the sugar changes how well a mix hydrates you.

In comparison, drinks in the 10 to 15% range (roughly 500 to 800 mOsm/kg in osmolality) are hyperosmolar and can slow how fast fluid leaves your stomach, which can leave people feeling bloated or queasy mid-effort. The general advice is to avoid anything above 500 mOsm/kg during exercise. 

Why hikers might want to opt for no sugar electrolytes​

On a two-hour hike, replacing sodium is the job, not fueling a marathon effort, so the extra carbohydrate in a sugary mix mostly adds calories and sweetness you don't need. 

Research on fluid intake during exercise found that the recommended concentration of fluids for consumption while exercising is about 6% carbohydrates, as it is emptied as quickly as water. 

A no sugar electrolyte drink sidesteps that problem, since sugar (not sodium) is what raises a drink's carbohydrate concentration.

Dental health is another reason why some people search for no sugar electrolytes. However, a 2025 systematic review of sports drinks and dental erosion found that acidity, not sugar, is the main driver: most sports drinks tested had a pH between 3.16 and 3.70, well below the 5.5 to 6.5 range where enamel starts to dissolve. 

Citric and malic acid, the ingredients that give most electrolyte mixes their tang, show up in sugar-free versions too. Going sugar-free won't necessarily protect your teeth on its own, but it does remove one thing to think about if you're also managing blood sugar, cavities, or simply don't want the calories.

What "electrolytes no sugar​" actually means on the label

Before comparing no sugar electrolytes​, it helps to know what the words on the front of the bag are legally required to mean. In the US, these phrases have specific definitions, and brands don't always use the strictest one.

The gap between marketing and label is real. Nuun Sport is widely known as a "clean" electrolyte tablet, but its nutrition panel lists 4g of total carbohydrate and 1g of added sugar per serving, from dextrose. Nuun's actual electrolyte powder no sugar option is a separate product, Nuun Zero Sugar, which lists 0g of sugar. If a specific product's sugar content matters to you, check that exact product's label rather than the brand's general reputation.

Best electrolytes powder no sugar: top 5 brands for hikers

There are five popular brands that actually have 0 grams of sugar in each serving size, differing only in the amount of sodium and the sweetener.

LMNT

LMNT electrolytes are built around one idea: replace as much sodium as possible per serving. At 1,000mg of sodium, it delivers more than any other product here, roughly what a heavy sweater loses in an hour of hard effort in the heat, alongside a genuinely stevia-sweetened, 0g-sugar formula.

Pros:

• Highest sodium per serving of any option here, useful for long or very hot hikes
• Simple ingredient list with no artificial sweeteners
• Wide flavor range, including unflavored

Cons:

• Tastes noticeably salty, which puts some first-time users off
• Lower potassium and magnesium relative to its sodium, so pairing with food matters on longer days
• Priced higher per serving than grocery-store options like Propel

Nuun Zero Sugar

Nuun Zero Sugar is the tablet format most people picture when they think of Nuun, though it's worth remembering this is a separate product from Nuun Sport, which contains 1g of added sugar. It offers a moderate, balanced electrolyte profile in a format that dissolves in a standard water bottle.

Pros:

• Genuinely 0g sugar, unlike its Nuun Sport sibling
• Convenient tablet format, no measuring or scooping
• Balanced sodium, potassium, and magnesium for typical day hikes
• Widely stocked at outdoor and grocery retailers

Cons:

• Easy to grab Nuun Sport by mistake off the same shelf
• Tablets dissolve more slowly than powder, less ideal if you want a drink right away
• Sodium is moderate, not enough on its own for heavy sweat loss on hot, long days

Ultima Replenisher

Ultima Replenisher electrolyte powder leans hard into potassium and magnesium rather than sodium, with just 55mg of sodium per serving, a fraction of what LMNT or Nuun Zero Sugar provide and far below what most hikers lose through sweat on a hot day.

Pros:

• Highest magnesium of the five options
• Large flavor range, including unsweetened
• Genuinely stevia-sweetened and 0g sugar
• Keto-friendly with minimal net carbs

Cons:

• Sodium is too low to work as a standalone electrolyte source for heavy sweating or hot hikes
• Unusual sodium-to-potassium ratio (close to 1:5) compared with the roughly 2:1 ratio dietitians commonly recommend
• Best paired with added salt rather than used alone

BioSteel Sports Hydration Mix

BioSteel positions itself around clean ingredients, with a moderate 140mg of sodium and a stevia-sweetened, 0 g sugar formula, though its potassium and magnesium content is on the low side.

Pros:

• Genuinely 0g sugar, stevia-sweetened
• Only 5 calories per serving
• Broad retail availability, easier to find than some boutique brands
• Simple ingredient list

Cons:

• Lowest magnesium of the five (essentially negligible at 2mg)
• Potassium also on the lower end
• Moderate sodium may need supplementing on very hot or long hikes

Propel Powder Packets

Propel is by far the most widely available option, sold in many grocery and pharmacy stores, and it sweetens differently than the other four, using acesulfame potassium and sucralose instead of stevia.

Pros:

• Genuinely 0g sugar
• Easiest to find almost anywhere, useful when traveling or restocking away from specialty stores
• Added vitamin C and other vitamins
• Lower price per serving than boutique brands

Cons:

• Sweetened with artificial sweeteners rather than stevia, a dealbreaker for hikers who prefer to avoid them
• Lower potassium than LMNT or Ultima
• No meaningful magnesium content

If you need a quick comparison of five brands, have a look at the table below:

What to look for in a no sugar electrolyte powder

A few checks matter more than the brand name on the front of the bag:

• Sodium per serving. This is what most hikers are actually short on. Look for at least 300 to 500mg per serving unless you're pairing the mix with salty food or a separate salt source.
• Sweetener type. Stevia and monk fruit are the most common choices in genuinely sugar-free mixes. Sucralose shows up in some sugar-free reformulations of originally sugary products.
• Format. Powder packets travel lighter than tablets for multi-day trips, but tablets, which show up in electrolyte packets no sugar searches too, dissolve more slowly, which helps if you're sipping over an hour rather than downing a drink at once.
• The full ingredient label. This matters especially for brands that sell both a sugared and a no sugar electrolyte powder version of the same product line, like Nuun Sport versus Nuun Zero Sugar.

Does removing the sugar change how well electrolytes work on a trail?

The sugar in some rehydration formulas isn't just there for taste. Sodium and glucose share a transporter in your gut called SGLT1, and when both are present in the right ratio, glucose actively pulls sodium and water across the intestinal wall with it. 

This is precisely the reason why rehydration therapies for illness-related dehydration are based on a certain ratio of glucose-to-sodium concentration and not the complete absence of sugar. The ideal concentration is 80 to 110 mM glucose paired with 45 to 60 mEq/L sodium, the most effective range. 

However, for routine hiking hydration, that mechanism matters far less. You're typically not dehydrated enough to need a clinical rehydration formula. You're topping up sodium lost to sweat while drinking normally, and plain water already gets absorbed well on its own. 

A no sugar electrolyte powder works fine for that. Save a sugar-containing, ORS-style formula for when you're actually sick or seriously dehydrated, not for a weekend trail.

Summing up

For most hikers, a no-sugar electrolyte powder is a fine default, and often the better choice, since the extra sugar in a sweetened mix mainly adds calories and, in concentrated drinks, a real risk of GI discomfort in the heat. 

The label still needs a second look, since "no sugar" isn't one fixed claim: Nuun Sport and Nuun Zero Sugar sit on the same shelf with very different sugar content. Sodium is what actually varies the most between genuinely sugar-free options, from LMNT's 1,000mg down to Ultima's 55mg, so match the product to your sweat rate rather than the marketing. 

And sugar hasn't lost its purpose entirely: it still plays a specific, evidence-backed role in rehydration therapy for actual illness, just not in everyday trail hydration.