Free Soul Electrolytes Review: 1,000mg Sodium, Tasted

Free Soul Hydrate carries 1,000mg of sodium in a single 7g sachet, more than a third of the salt most UK adults are told to eat in a whole day. That dose sits at the centre of every free soul electrolytes search: is it good for you, is it too salty, and does the label back up the price. The short answer is that the dose is real and the salt is the trade-off, named directly by five of the eight customer reviews quoted below.

Free Soul is a Beaconsfield-based supplement brand made for women, known first for its protein and greens powder blends before it launched an electrolyte sachet. Hydrate is a ten-ingredient, stevia-sweetened powder carrying 1,000mg sodium, 300mg potassium and 70mg magnesium, ranked eleventh of twenty-two brands in our best electrolytes UK guide as the best high-sodium value pick. We reviewed the label, the ingredient panel and its customer reviews against the same formulation-purity framework used across that guide, set out in full at The Editor Lab.

I built the criteria this review runs on after ranking twenty-two electrolyte brands for that wider guide: how lean the ingredient list is, how good the raw salt turns out to be, how much sugar and sweetener baggage rides along with it, and who the dose genuinely suits, plus a fifth check, sachet ease, reserved for brands I have physically opened myself, which does not include Free Soul. At home I run reverse osmosis water through a remineralising filter, because stripping minerals out of your water and buying them back in a sachet is the same problem, solved twice. That is the lens Free Soul is measured against here, on the label and the reviews, not a taste test.

Here is what Free Soul's own customers say, verbatim, across Trustpilot and the brand's on-site reviews.

Jane, on Trustpilot, expected to dislike the saltiness.

Five of the eight reviews we checked name the salt directly. Nina is one of them.

For Sarah Stringer, the salt made every flavour hard to finish.

Lena Doherty disliked the taste and then hit Free Soul's refund position on opened packs.

Not every reviewer is drinking Hydrate for sport. Emmy C. takes it for POTS, a condition that needs more sodium than most days call for.

Chantelle T. found the flavour too salty. Her partner did not agree.

Rosie M. links the sachets to fewer headaches, a pattern she reports rather than one this review can verify.

Tiffany mixes one sachet into a full litre rather than the labelled 700ml.

Free Soul Hydrate is a genuine high-sodium sachet, not a marketing claim dressed up as one: 1,000mg sodium, 300mg potassium, 70mg magnesium and zero sugar, sweetened with stevia rather than sucralose. It suits heavy sweaters, hot climates and anyone medically advised toward more sodium, including several reviewers managing POTS. It does not suit a desk-bound reader who dislikes a salty drink, because saltiness is the complaint that dominates the brand's own review pages. The formulation earns credit on sugar, sweetener and dose. It loses credit on ingredient count, which sits higher than the leanest formulas in this category, and on salt provenance, which Free Soul does not publish.

Every 7g sachet lists ten ingredients on the Lychee flavour and nine on the rest: sodium chloride, citric acid, potassium chloride, magnesium malate, tri-calcium citrate, vitamin C, zinc citrate, natural flavouring and steviol glycosides, the plant-based sweetener known as stevia. Lychee adds a second flavouring ingredient on top of that list.

The dose per sachet is 1,000mg sodium, 300mg potassium, 70mg magnesium and 40mg vitamin C. Free Soul's product page also states 120mg calcium, though that figure sits on the marketing copy rather than a printed mineral panel, so treat it as the brand's own claim, printed here as 120mg per the brand page, rather than a lab-verified one. The nutrition panel itself is sparser: 0g sugar, 3.6g carbohydrate, 15 kcal and 2.17g salt per sachet.

Mix one sachet into 700ml of cold water, once a day. Free Soul sells five flavours: Lychee, Variety, Mango & Lime, Citrus and Mixed Berry. Cherry sat out of stock at the time of writing.

One sachet of Free Soul Hydrate carries 2.17g of salt, built from 1,000mg of sodium. The NHS advises no more than 6g of salt a day for most adults, which puts a single sachet at more than a third of that guidance before anything else eaten or drunk that day is counted. Public Health England's own reference intakes put daily sodium at 2.4g, roughly what two and a half sachets would deliver on their own.

That is not automatically too much. Heavy sweat, hot climates, endurance training and some medical conditions genuinely need more sodium than an average desk-bound day, and a 1,000mg sachet is a legitimate answer to real signs of electrolyte imbalance, not a marketing figure on its own, and several of Free Soul's own reviewers describe exactly that use case, from POTS management to a physically demanding daily routine. For a reader outside those categories who dislikes a salty drink, 1,000mg is more sodium than the day calls for, and the reviews above make the trade-off plain rather than hidden.

Run against the same checks every brand in our wider guide sits against, Free Soul is a mixed formulation, strong in some places and unscored in others.

Ingredient count sits on the higher side: nine or ten, depending on flavour, against leaner formulas that manage on five or six. That counts against a product under our framework, and Free Soul does not explain what each addition earns.

Published heavy-metal testing: none found. Free Soul makes no testing claim on the product page, and an Informed Sport listing in search results returned an access error when we tried to open it, so certification is not confirmed here. Worth stating plainly: Informed Sport is a banned-substance screen for athletes, not a heavy-metal or purity test, and independent testing of electrolyte powders has found real contamination gaps a banned-substance screen would never catch.

Sweetener quality is a genuine strength: steviol glycosides, above sucralose on our scale. Sugar load is a strength too, at zero grams.

Named salt source: none published. The label states only sodium chloride, with no named mine, sea or region behind it. Under our framework that is unscored rather than failed, because naming a source is optional evidence Free Soul has not offered, not a claim it made and broke.

Sachet usability is not rated. Nobody on our team has physically opened a Free Soul sachet, and this criterion is first-hand only.

Across the sources we checked, the ratings are consistent: a 4.4 average from 4,624 Trustpilot reviews, a 4.4 average from 336 reviews on the product page itself, and 4.3 from 797 Amazon UK reviews. Saltiness is the complaint that recurs most often inside those scores, named directly in five of the eight reviews quoted above. A smaller, quieter thread comes from reviewers managing POTS or a demanding daily routine, for whom the same saltiness is the reason the product works.

One point is worth stating plainly rather than softening. Lena Doherty's exchange with customer service is a customer-reported account of Free Soul's refund position on opened packs, quoted above in her own words, not a policy this review independently confirmed on the brand's own returns page.

Free Soul's own label sets the dose at one sachet a day, and that instruction answers how often for this specific product rather than setting a wider rule for electrolytes generally. The label also carries a standard caution: anyone pregnant, breastfeeding, under eighteen, or taking prescription medication should speak to a doctor before use, and the recommended daily dose should not be exceeded.

Drinking electrolytes every day is not inherently a problem. The real concern is dose stacking: coffee, exercise, hot weather and other supplements or medications can all add sodium or interact with it across the same day, which is why whether you need electrolytes every day depends on your baseline diet and activity rather than the sachet alone. At 1,000mg sodium, Free Soul is a concentrated daily dose rather than a light top-up, and the rest of the day's salt is worth building around it rather than adding on top of it.

A 30-sachet box of Free Soul Hydrate costs £32.49 on the brand's own site, which works out at £1.08 per sachet, or from 87p on the subscription badge shown at checkout (as of September 2026, freesoul.com). Holland & Barrett sells a 5-sachet trial pack of the Citrus flavour at £8.49, a lower-commitment way to check the taste before buying a full box.

Free Soul also sells a second sachet under the same Hydrate range: HydraCreatine, an eighteen-ingredient powder at £29.99 for 30 x 9g sachets, built around creatine monohydrate alongside the same electrolyte base. It is a different product for a different job, aimed at a reader already taking creatine who wants it folded into a daily sachet, not a straight electrolyte swap for Hydrate.

Free Soul sits inside a small cluster of UK brands built around the same 1,000mg sodium dose, and the real differences between them come down to formulation and price rather than the headline number.

LMNT matches Free Soul on sodium and publishes a certificate of analysis for every batch it ships, the published testing Free Soul does not have. It is also the one comparator here I have used myself: it is salty, deliberately so, and I like it that way, which tells you more about my own taste than it does about whose formulation wins.

Puresport carries the same 1,000mg dose and holds Informed Sport certification, the same banned-substance screen Free Soul's own listing could not confirm.

Zooki's Exercise & Recover sachet also runs at 1,000mg sodium and costs more than Free Soul per serving, without a formulation advantage that explains the gap.

None of those three are the right answer for a reader who cannot take much sodium at all. ViDrate is built around roughly 38mg of sodium, a genuinely low-sodium formula for someone managing a medical restriction rather than replacing what a workout sweated out.

For reference, here is Free Soul Hydrate's full label as printed on the pack.

Ingredients (non-Lychee flavours): Sodium Chloride, Citric Acid, Potassium Chloride, Magnesium Malate, Tri-Calcium Citrate, Vitamin C, Zinc Citrate, Natural Flavouring, Steviol Glycosides. Lychee adds a second Flavouring ingredient.

Per sachet (7g): Sodium 1,000mg, Potassium 300mg, Magnesium 70mg, Calcium 120mg (per the brand's product page), Vitamin C 40mg.

Nutrition panel per 7g: 15 kcal, 3.6g carbohydrate, 0g sugars, 2.17g salt.

Label text: "Food Supplement with electrolytes, Vitamin C, Zinc and with sweetener. 30 x 7g sachets. Daily dose: 1 sachet."

Mixing instruction: pop one sachet into 700ml of cold water.

Manufactured for: ARA Fitness Ltd, Kings Head House, 15 London End, Beaconsfield, HP9 2HN, UK. Company number 10150642, incorporated April 2016.