Disclosure: Hyro publishes this guide, and Hyro is one of the products compared. To keep it fair, every competitor number comes from that brand's own US website (checked October 21, 2026, links at the end), Hyro's numbers come from our US label and store, and we call out where another product is the better fit.
A sugar free* electrolyte drink is the simplest way to add minerals to your water without the calories of a sports drink. But "zero sugar" on the front of the pack doesn't tell you much else. The products in this guide range from 55 mg to 1,000 mg of sodium and use different sweeteners, and the price per serving varies by more than double. Here's how six popular options compare.
Quick picks
- Best everyday balance: Hyro (500 mg sodium, 100 mg magnesium, stevia)
- Most sodium: LMNT (1,000 mg)
- Most complete vitamin blend: DripDrop Zero Sugar Plus
- Cheapest per serving: Nuun Zero Sugar ($0.75)
- Lowest sodium: Ultima Replenisher (55 mg)
- Best value tub of sticks: DripDrop Zero Sugar (32 sticks)
What "sugar free" actually means
In the US, FDA rules allow a food to be labeled sugar free when it has less than 0.5 g of sugars per labeled serving. So "0 g" on a label can mean a trace amount. Hyro lists the exact figure, 0.03 g per stick, so you know what you're getting. Sugar free also says nothing about carbohydrate from other sources, calories, or which sweetener is used, which is why we compare those too.
How we compared
- Competitor sodium, sugar, sweeteners, servings and prices come from each brand's official US product page, checked October 21, 2026. Hyro figures come from our US Nutrition Facts panel and our US store.
- Price per serving is the standard one-time price divided by servings.
- Serving sizes differ: DripDrop Zero Sugar is made for 8 oz of water, most others for 16 oz or more.
- We only included products whose label details we could confirm on the official site. Liquid I.V. sells a Sugar-Free Hydration Multiplier (from $21.84 on its site), but we couldn't confirm its label figures there at the time of writing, so it's not in the table.
- No lab testing and no blind taste panel.
Comparison table
| Product | Sodium | Sugar | Sweetener | Servings | Price / serving | Who it suits |
|---|---|---|---|---|---|---|
| Hyro | 500 mg | 0.03 g | Stevia leaf extract | 15 sticks | $1.66 | Everyday drinking, more magnesium |
| LMNT Recharge | 1,000 mg | 0 g | Stevia leaf extract | 30 sticks | $1.50 | Heavy sweaters, low-carb |
| DripDrop Zero Sugar Plus | 660 mg | 0 g | No artificial sweeteners (per DripDrop) | 16 sticks | $1.56 | High dose plus vitamins |
| DripDrop Zero Sugar | 330 mg (8 oz) | 0 g | Sucralose | 32 sticks | $1.12 | Smaller drinks, value |
| Nuun Zero Sugar (tablets) | 200 mg | 0 g | Stevia leaf extract | 10 tablets | $0.75 | Budget, fizzy |
| Ultima Replenisher (Lemonade) | 55 mg | 0 g | Organic stevia (Reb A) | 20 sticks | $1.05 | Low sodium, flavor first |
The picks in detail
Hyro: best everyday balance
We make Hyro, so take this section with that in mind. Each stick has 500 mg sodium, 250 mg potassium, 100 mg magnesium and 45 mg vitamin C, with 5 calories, less than 1 g of carbohydrate and 0.03 g of sugar. It's sweetened with stevia leaf extract and uses natural flavors and colors. It's vegan friendly*, gluten free* and keto friendly*. A 15-stick pouch is $24.95 ($1.66). AutoShip gives you 20% off every order ($19.96 a pouch, $1.33 a serving). US Hyro is packaged in the USA. Flavors: Lemon Lime, Orange Mango, Tropical, Blackcurrant Crush and a Variety Pack.
Choose it if you want a mid-range sodium dose with plenty of magnesium for daily use. Skip it if you want the cheapest option or the most sodium.
LMNT: most sodium
LMNT lists 1,000 mg sodium, 200 mg potassium and 60 mg magnesium with 0 g sugar, sweetened with stevia. It's $45 for 30 ($1.50), or $39 on subscription, with free US shipping.
Choose it if you sweat heavily or eat low-carb and want a lot of salt. Skip it if you'll drink it on quiet days, when 1,000 mg can be more than you need.
DripDrop Zero Sugar Plus: most complete vitamin blend
Zero Sugar Plus lists 660 mg sodium, 360 mg potassium and 80 mg magnesium per 16 oz stick, with a blend of vitamins and zinc. DripDrop says it uses no artificial sweeteners, and it contains chicory root fiber. It's $24.99 for 16 ($1.56).
Choose it if you want a high dose and like the idea of added vitamins. Skip it if you prefer short ingredient lists.
DripDrop Zero Sugar: value for smaller drinks
The regular Zero Sugar stick is made for 8 oz of water and lists 330 mg sodium, 180 mg potassium, 0 g sugar and 10 calories, sweetened with sucralose. A 32-stick box is $35.99 ($1.12), with free shipping on $35+.
Choose it if you drink smaller servings and don't mind sucralose. Skip it if you avoid artificial sweeteners.
Nuun Zero Sugar: cheapest per serving
Nuun Zero Sugar tablets list 200 mg sodium, 125 mg potassium, 20 mg magnesium and 30 mg calcium, with 0 g sugar and 15 calories, sweetened with stevia. A 10-tablet tube is $7.49 ($0.75).
Choose it if you want a light, fizzy, low-cost option. Skip it if you need a bigger electrolyte dose.
Ultima Replenisher: lowest sodium
Ultima's Lemonade stick lists 55 mg sodium, 250 mg potassium, 47 mg calcium and 100 mg vitamin C, with 0 g sugar and 0 calories, sweetened with organic stevia. It's $20.99 for 20 ($1.05).
Choose it if you want flavor with very little salt. Skip it if you're replacing sweat losses.
Stevia vs sucralose: does it matter?
Both are used to sweeten drinks without sugar. Stevia comes from the leaf of the stevia plant. Sucralose is a synthetic sweetener. Some people notice an aftertaste with one and not the other, so if a zero-sugar drink has ever tasted "off" to you, try one with a different sweetener before giving up on the category. Mixing with a little more water often softens both sweetness and aftertaste.
Reading the label: a 30-second checklist
- Check total sugars and the serving size it applies to.
- Check sodium per serving against how much you sweat.
- Look at the sweetener in the ingredients list.
- Check how much water the serving is designed for.
- Work out price per serving, including any subscription discount.
Frequently asked questions
What does sugar free mean on a US label?
Under FDA labeling rules, a food can be called sugar free when it has less than 0.5 g of sugars per labeled serving. Hyro has 0.03 g per stick. Always check the Nutrition Facts panel for the exact number.
Which sugar free electrolyte has the most sodium?
Of the sugar-free products we compared, LMNT has the most at 1,000 mg, followed by DripDrop Zero Sugar Plus at 660 mg and Hyro at 500 mg.
Are sugar free electrolyte drinks sweetened with artificial sweeteners?
Some are, some aren't. Hyro, LMNT, Nuun Zero Sugar and Ultima use stevia. DripDrop Zero Sugar uses sucralose. DripDrop Zero Sugar Plus says it has no artificial sweeteners.
Is a sugar free electrolyte drink good for keto?
Most of the products here have little to no sugar or carbohydrate. Hyro has less than 1 g of carbohydrate per stick and is keto friendly*. Check the label against your own plan.
Will a sugar free electrolyte drink break a fast?
That depends on how strictly you define fasting. Hyro has 5 calories and 0.03 g sugar per stick. If you follow a strict zero-calorie fast, check with whoever designed your plan.
Sources
- Hyro: US pack label and US store prices, drinkhyro.com/products/lemon-lime
- LMNT: drinklmnt.com/products/lmnt-recharge-electrolyte-drink
- DripDrop Zero Sugar Plus: dripdrop.com (Zero Sugar Plus, 16 pack)
- DripDrop Zero Sugar: dripdrop.com (Zero Sugar Lemon Lime, 32 pack)
- Nuun Zero Sugar: nuunlife.com/products/nuun-zero
- Ultima Replenisher: ultimareplenisher.com/products/lemonade-electrolyte-powder-drink
- Liquid I.V. Sugar-Free: liquid-iv.com/collections/sugar-free
*Based on our current ingredients and supplier information. Check the label if you have specific dietary requirements. Offers can change. Competitor prices, formulas and offers change often, so check each brand's site before you buy. This guide is general information, not medical advice. If you have high blood pressure, kidney or heart concerns, are pregnant, or follow a sodium-restricted diet, talk to your doctor before adding an electrolyte drink.
