Updated October 2026. Label facts checked on 21 October 2026 on each brand's own UK website. Verve makes one of the products below (Pure Hydra Electrolytes), so read the table before you read our view.
The nine sugar-free electrolyte powders and sachets below differ far more on the label than their packaging suggests. Sodium runs from 40mg to 1,080mg a serving, potassium from 150mg to 525mg, and magnesium from about 26mg to 150mg. All nine have no added sugar (every one is under 1g a serving) and are sweetened with stevia or with nothing at all. Three are Informed Sport certified; the rest name no certification body, or say "third-party tested" without naming one. You are choosing between high-sodium sports sachets at 1,000mg and above, mid-range sticks at 500mg to 750mg, and low-sodium daily products at 200mg and under, and only the label tells you which one you are holding.
The short answer
- Most magnesium (150mg), with sodium and potassium close to even (500mg and 400mg): Verve Pure Hydra Electrolytes, 6.7g stick, 14 to a box, stevia.
- Highest sodium (1,080mg): Styrkr SLT+, 7.5g sachet, 30 to a box, seven ingredients. Informed Sport.
- Most potassium (525mg), least sodium (40mg): Artah Cellular Hydration, 7g scoop from a 30-serving pouch, no sweetener.
- No sweetener at all: Hunter & Gather Restore Unflavoured (750mg sodium, three ingredients); Protein Rebel Sustain (500mg sodium, four ingredients); REPOWR RAW (1,000mg sodium).
- Informed Sport certified at 1,000mg sodium: Puresport Ultra Electrolytes, 30 sachets, no vitamins.
- Low sodium with vitamin C and zinc: Innermost The Hydrate Blend, 200mg sodium, 150mg vitamin C, 3mg zinc; Humantra, about 184mg to 210mg sodium a sachet, Informed Sport.
Sugar-free electrolyte powders UK: the comparison table
All figures are per serving as printed on the label or product page. Where a figure is our own calculation, the cell says so.
| Product | Format and serving size | Sodium (mg) | Potassium (mg) | Magnesium (mg, form) | Other actives | Sugar per serving | Sweetener | Servings per pack | Testing or certification | Where sold |
|---|---|---|---|---|---|---|---|---|---|---|
| Verve Pure Hydra Electrolytes | Stick, 6.7g | 500 (citrate), plus 100mg chloride | 400 (citrate), 20% NRV | 150 (citrate and bisglycinate), 40% NRV | Vitamin C 100mg, taurine 200mg, coconut water powder 300mg, BioPerine 10mg | 0.2g (12kcal) | Steviol glycosides from stevia | 14 | Not stated on the product page | vavaverve.com; Holland & Barrett (20-pack) |
| Styrkr SLT+ | Sachet, 7.5g | 1,080 (chloride) | 280 (chloride) | 120 (citrate) | Calcium 60mg (malate) | 0g (10kcal) | Steviol glycosides | 30 | Informed Sport | styrkr.com |
| Puresport Ultra Electrolytes | Sachet, weight not stated | 1,000 (chloride) | 250 (chloride) | 100 (citrate) | Calcium 50mg (citrate) | "Sugar free", no figure | Steviol glycoside rebaudioside A | 30 | Informed Sport | puresport.co; Ocado |
| REPOWR Daily Electrolytes | Sachet, about 6.2g (our maths from a 186g pack of 30) | 1,000 (chloride and citrate) | 200 (chloride) | 100 (malate) | Calcium carbonate, amount not stated | "No sugar", no figure | Stevia; none in RAW Unflavoured | 30 | None stated | getrepowr.co.uk; Holland & Barrett |
| Hunter & Gather Restore | Sachet, 3.8g | 750 (pink Himalayan salt); salt 1.9g | 150 (chloride) | 80 (marine citrate), 21% NRV | None | 0g (1kcal) | None (Unflavoured); steviol glycosides (flavoured) | 30 | Third-party tested (brand statement); B Corp | hunterandgatherfoods.com; Ocado; Holland & Barrett |
| Protein Rebel Sustain | Stick, 5.4g | 500 (sea salt); chloride 600mg; salt 1.2g | 200 (coconut water powder), 10% NRV | 60 (marine citrate), 16% NRV | Calcium 60mg (marine algae) | 0g (0kcal) | None | 14 or 28 | None stated | proteinrebel.com |
| Artah Cellular Hydration | Pouch, 7g scoop | 40 (Himalayan sea salt) | 525 (tri-potassium citrate), 26% NRV | 60 (citrate), 16% NRV | Calcium 120mg, vitamin C 100mg, maca extract 600mg, inulin 1,200mg, malic acid 1,300mg | "No added sugars", no figure | None | 30 | Third-party tested (brand statement) | artah.co |
| Innermost The Hydrate Blend | Sachet, 4g | 200; chloride 317mg | 200, 10% NRV | 100 (form not stated), 27% NRV | Vitamin C 150mg, zinc 3mg, calcium 60mg, phosphorus 50mg, vitamin B12 2.5μg | 0g (4kcal) | Stevia | 30 | None stated | innermostglobal.com |
| Humantra | Sachet, 3.6g to 3.9g by flavour (retailer listings) | Not on humantra.co.uk (image). Tesco and Ocado label listings: 368 to 420 per 2 sachets, about 184 to 210 a sachet | 385 per 2 sachets, about 193 a sachet | 52 per 2 sachets (citrate), about 26 a sachet | Per 2 sachets: vitamin C 230mg, zinc 5.3mg, calcium 97mg, vitamin B12, chromium | "No added sugar", no figure (5 to 10kcal a sachet) | Steviol glycosides from stevia | 20 (12-sachet variety pack also sold) | Informed Sport | humantra.co.uk; select Boots stores; Tesco; Ocado |
featured in this article
500mg sodium, 400mg potassium, 0.2g sugar
From £18.39/month
What to look for on the label
Four things decide what a sachet is, and none is the flavour. Sodium: 40mg to 1,080mg a serving here, also printed as salt (sodium x 2.5), so 500mg of sodium is 1.25g of salt and 1,000mg is 2.5g, against a UK guideline maximum of 6g of salt a day for adults. That matters on a sodium-restricted diet. Potassium and magnesium: UK labels use reference intakes of 2,000mg and 375mg, so 400mg of potassium is 20% NRV and 150mg of magnesium is 40%. Magnesium contributes to electrolyte balance and to normal muscle function; potassium contributes to normal muscle function. Those are the authorised wordings and anything bolder is marketing. Form: citrate, bisglycinate, malate and chloride all appear here, and the label should name it. Sweetener: everything above uses steviol glycosides or nothing. Extras such as vitamin C, zinc, taurine, coconut water, maca and inulin are best judged by the amount on the label.
The products in detail
Verve Pure Hydra Electrolytes
Pure Hydra is the product we make. One 6.7g stick: 500mg of sodium as citrate plus 100mg of chloride, 400mg of potassium as citrate (20% NRV) and 150mg of magnesium as citrate and bisglycinate (40% NRV), the most magnesium in this table and the second most potassium. It adds 100mg of vitamin C (125% NRV), 200mg of taurine, 300mg of coconut water powder and 10mg of BioPerine. Sugars 0.2g a stick, 12kcal, salt 1.25g. Steviol glycosides from stevia and natural flavourings; the page states no artificial sweeteners or colours. Contains coconut. One stick in 250 to 500ml of water.
£22.99 for 14 sticks (£1.64 a stick), £18.39 a month on subscription (£1.31), or £50.93 a quarter for 42 (£1.21). Sold at vavaverve.com; Holland & Barrett lists a 20-pack. The plain trade-off: the product page names no testing body or certification, where Styrkr, Puresport and Humantra state Informed Sport. Who it suits: anyone who wants 500mg of sodium matched with 400mg of potassium and 150mg of magnesium in one stick.
Styrkr SLT+
A 7.5g sachet: 1,080mg of sodium as chloride, 280mg of potassium as chloride, 120mg of magnesium as citrate and 60mg of calcium as malate. Sugars 0g, 10kcal, seven ingredients, sweetened with steviol glycosides. Informed Sport certified. 30 sachets to a box. Sold at styrkr.com. Who it suits: tested athletes who want the highest sodium dose here on a short ingredient list.
Puresport Ultra Electrolytes
Per sachet: 1,000mg of sodium as chloride, 250mg of potassium as chloride, 100mg of magnesium as citrate and 50mg of calcium as citrate, with citric and malic acid, natural flavouring, steviol glycoside rebaudioside A and beetroot powder. Sugar free, but no figure and no sachet weight on the page. Informed Sport certified, vegan, made in the UK. 30 sachets to a box. Sold at puresport.co; Ocado lists it. Who it suits: anyone who wants a certified 1,000mg sodium sachet without vitamins.
REPOWR Daily Electrolytes
Every sachet carries 1,000mg of sodium (Oryx Desert Salt plus sodium citrate), 200mg of potassium as chloride and 100mg of magnesium as malate, with calcium carbonate to soften the taste. Flavoured versions use stevia; RAW Unflavoured has no stevia, flavour, citric acid or calcium carbonate. No sugar, carbohydrate or calories, but no figures and no sachet weight (about 6.2g by our maths). 30 sachets to a box. No certification mentioned. Sold at getrepowr.co.uk; Holland & Barrett lists it. Who it suits: anyone who wants 1,000mg of sodium with the option of no sweetener at all.
Hunter & Gather Restore
Three minerals and nothing else: 750mg of sodium from pink Himalayan rock salt (1.9g of salt), 150mg of potassium as chloride and 80mg of magnesium as marine citrate (21% NRV), in a 3.8g sachet, 1kcal, 0g sugar. Unflavoured has no sweetener of any kind; the flavoured versions add natural flavouring, citric acid and steviol glycosides. Third-party tested, the brand says, with no body named. B Corp. 30 sachets to a box. Sold at hunterandgatherfoods.com; Ocado sells a 7-pack and Holland & Barrett lists it. Who it suits: anyone who wants salt, potassium and magnesium with no flavour or sweetener, and accepts the lowest potassium figure here.
Protein Rebel Sustain
Four ingredients: coconut water powder, sea salt, marine magnesium citrate and marine algae calcium. A 5.4g stick gives 500mg of sodium (1.2g of salt), 600mg of chloride, 200mg of potassium (10% NRV), 60mg of magnesium (16% NRV) and 60mg of calcium. 0g sugar, 0kcal, no sweetener, vegan, made in Britain. No testing body named. Sold in boxes of 14 or 28 at proteinrebel.com. Who it suits: anyone who wants 500mg of sodium with half Verve's potassium, no sweetener and a 14-stick box to start with.
Artah Cellular Hydration
The outlier. A 7g scoop from a 250g pouch gives 525mg of potassium as tri-potassium citrate (26% NRV), only 40mg of sodium, 60mg of magnesium as citrate (16% NRV), 120mg of calcium as citrate, 100mg of vitamin C, 600mg of a 10:1 maca extract, 1,200mg of inulin and 1,300mg of malic acid. Natural lemon and orange flavour, no sweetener, no added sugar, though no sugar figure is given. Third-party tested, the brand says, with no body named. 30 servings a pouch. Sold at artah.co. Who it suits: anyone who wants potassium rather than sodium and is fine with inulin, which the brand itself flags for people who avoid FODMAPs.
Innermost The Hydrate Blend
A 4g sachet with 200mg of sodium, 317mg of chloride, 200mg of potassium (10% NRV), 100mg of magnesium (27% NRV, form not stated), 60mg of calcium, 50mg of phosphorus, 3mg of zinc, 150mg of vitamin C and 2.5μg of vitamin B12. 0g sugar, 4kcal, natural flavours and "a tiny amount of stevia". The page gives sodium as 225mg in one place and 200mg in the nutrition table; we used the table. No certification mentioned. 30 sachets to a box. Sold at innermostglobal.com. Who it suits: anyone who wants a low-sodium daily sachet with the most vitamin C in the table.
Humantra
The most widely stocked brand here and the hardest to read. Humantra's site sells 20-sachet boxes and a 12-sachet variety pack, says every sachet is sugar free and sweetened with stevia leaf extract, confirms Informed Sport certification and recommends one sachet a day, but publishes the nutrition panel as an image. That panel, as reproduced on Tesco and Ocado listings, is per two sachets: 368mg to 420mg of sodium by flavour, 385mg of potassium, 52mg of magnesium as citrate, 97mg of calcium, 5.3mg of zinc and 230mg of vitamin C. Halve those for one sachet. Who it suits: anyone who wants a low-sodium, vitamin-added sachet with a certificate, sold in select Boots stores, Tesco and Ocado.
Others you will see named
Free Soul Hydrate (30 x 7g sachets; 1,000mg sodium, 300mg potassium, 70mg magnesium; Citrus flavour on the Informed Sport register) says no added sugar, but its page text does not name the sweetener; a reseller's copy of the pack label lists steviol glycosides, so check the box. Liquid I.V. Hydration Multiplier contains sugar and stevia, and its UK page prints the panel as an image, as does its Sugar-Free version. Precision Fuel & Hydration PH 1500 drink mix has 15g of sugar in a 20g sachet (the figure comes from UK retailer listings; the brand's own site showed us dollar prices). LMNT is priced in dollars on its own site. Myprotein THE Electro (20 x 9.4g) lists sucralose and acesulfame K on the label reproduced by Tesco; SiS Hydro+ sticks list sucralose on the Superdrug listing. Phizz tablets contain glucose and sucralose; O.R.S and Nuun are tablets. Bulk Electrolyte Powder is a tub whose nutrition table is printed per two servings, with no single-serving figures. Virtue gives no individual doses or named sweetener. DRV+'s site is a placeholder, we found no UK brand site for Freak Athletics, Strike or Rival, and Wild Nutrition sells no electrolyte product.
How to compare electrolyte powders
- Sodium first, in milligrams. 40mg to 1,080mg across this table. Pick the band first, and convert to salt (x2.5) if anyone in the house watches salt.
- Then the sodium to potassium ratio. Hunter & Gather and REPOWR are 5:1, Puresport 4:1, Styrkr about 4:1, Protein Rebel 2.5:1, Verve 1.25:1, Innermost and Humantra about 1:1, Artah about 1:13.
- Magnesium dose and form. About 26mg (Humantra, per sachet) to 150mg (Verve). If the form is not named, the label is thinner than it looks.
- Per sachet, not per serving. Humantra's panel is per two sachets while its site recommends one a day.
- Read the sweetener line, not the badge. Stevia is a sweetener; sucralose and acesulfame K are the ones most people mean to avoid. Only unflavoured products have none.
- Price the plan you will actually be on. One-off, monthly and quarterly plans differ by brand, and so do first-order discounts, so check each brand's site for today's price.
- Certification if you are tested. Styrkr, Puresport and Humantra are Informed Sport certified. "Third-party tested" with no named body is a statement, not a certificate.
Electrolyte powders: your questions
Which electrolyte powder has no sugar and no artificial sweeteners in the UK?
All nine in the table: Verve Pure Hydra Electrolytes (0.2g sugars, stevia), Styrkr SLT+, Puresport, REPOWR, Innermost and Humantra (stevia), and Hunter & Gather Restore Unflavoured, Protein Rebel Sustain, REPOWR RAW and Artah Cellular Hydration (no sweetener). Liquid I.V. Hydration Multiplier and PH 1500 fail on sugar; Myprotein THE Electro, SiS Hydro+ and Phizz fail on sucralose.
How much sodium should an electrolyte powder have?
UK labels give no single answer. Daily products sit at 40mg (Artah), about 184mg to 210mg (Humantra) and 200mg (Innermost). Mid-range sticks give 500mg (Verve, Protein Rebel) and 750mg (Hunter & Gather). Sports sachets give 1,000mg (REPOWR, Puresport) and 1,080mg (Styrkr). 1,000mg of sodium is 2.5g of salt, against a UK guideline maximum of 6g a day for adults.
What is in Verve Pure Hydra Electrolytes?
Per 6.7g stick: sodium 500mg (citrate) plus 100mg chloride, potassium 400mg (citrate, 20% NRV), magnesium 150mg (citrate and bisglycinate, 40% NRV), vitamin C 100mg (125% NRV), taurine 200mg, coconut water powder 300mg and BioPerine 10mg (9.5mg piperine). Sugars 0.2g, 12kcal, salt 1.25g. Steviol glycosides from stevia, natural flavourings, no artificial sweeteners or colours. Contains coconut. £22.99 for 14, £18.39 a month on subscription.
Is Humantra sugar free?
Yes. Humantra's help centre says it "contains no added sugar" and "is sweetened naturally using stevia leaf extract", at 5 to 10kcal a sachet. It is Informed Sport certified and sold in boxes of 20. The mineral figures in our table come from Tesco and Ocado listings, per two sachets, because the brand's own panel is an image.
Are electrolyte powders better than tablets?
Read them the same way: milligrams of sodium, potassium and magnesium per serving, then the sweetener line. The sachets here give 40mg to 1,080mg of sodium and 150mg to 525mg of potassium with stevia or no sweetener. Of the tablets we looked at, Phizz lists glucose and sucralose, SiS Hydro+ lists sucralose on a retailer listing, and O.R.S and Nuun did not publish per-tablet doses in the text we reached. The format matters less than the numbers.
Which UK electrolyte has the most potassium?
Artah Cellular Hydration, 525mg a serving (26% NRV) with 40mg of sodium. Verve Pure Hydra Electrolytes is next at 400mg (20% NRV), then Styrkr 280mg and Puresport 250mg. Protein Rebel, REPOWR and Innermost give 200mg, Humantra about 193mg a sachet, and Hunter & Gather the least at 150mg.
How we checked
Every label fact above was taken from the brand's own UK website on 21 October 2026: vavaverve.com, styrkr.com, puresport.co, getrepowr.co.uk, hunterandgatherfoods.com, proteinrebel.com, artah.co, innermostglobal.com and humantra.co.uk, plus freesoul.com, liquid-iv.co.uk, precisionhydration.com, drinklmnt.com, myprotein.com, scienceinsport.com, phizz.co, orshydration.com, bulk.com/uk and virtuedrinks.com for the products outside the table. Exceptions are marked in the text: Humantra's mineral amounts come from Tesco and Ocado label listings because the brand site publishes its panel as an image, and the sweeteners for Free Soul, Myprotein and SiS and the sugar figure for PH 1500 come from retailer listings. Our own calculations are flagged. Prices are deliberately not compared here: they change weekly and promotions distort them. Every brand's current price is on its own site. Verve makes Pure Hydra Electrolytes; the table is facts you can check on each label and our opinion stays in the text.
Food supplements should not be used as a substitute for a varied, balanced diet and a healthy lifestyle. The mention of other brands is for comparison only. All trademarks belong to their respective owners.
