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Halcyon4.4 · 1.6k reviews

Everyday Hydration

A third of the sodium, for people who are not running marathons.

SachetsVeganVegetarianDairy-freeGluten-freeSugar-freeNut-freeSoy-freeSustainably sourced
Lowest current price
£25of £25–£28
Cost per serving
83p
Servings per pack
30 × 1 sachet
Retailers stocking it
3
Spread between retailers
11%
Label disclosure
Full disclosure
Compare 3 retailer prices

At a glance

The everyday counterpart to a sports electrolyte. Three hundred milligrams of sodium rather than a thousand, with magnesium and a light cucumber flavour. Intended for warm days, travel and hangovers rather than training.

It may suit you if

  • You want electrolytes without a sports-level sodium load
  • You drink it at a desk or on a plane
  • You find sports sachets too salty

You may prefer something else if

  • You train long or in heat — you may need more sodium

The brand

Halcyon

A small brand with a tight range built entirely around evenings and winding down. Strong on taste and texture, narrower on range.

Founded
2021
Based in
United Kingdom
Publishes batch testing
Not published
All Halcyon products

Sustainability

Home-compostable sachets, FSC carton.

What is in it

The label, in full

Every active ingredient amount is printed on the label.

Sodium, potassium and magnesium blend
300mg sodium

Sodium is the main variable. Sports-oriented sachets can carry three or four times the sodium of everyday hydration products. Typical serving across the market: 300mg – 1000mg sodium. Published human research: extensive.

Magnesium bisglycinate
80mg

Magnesium bound to the amino acid glycine. Generally better tolerated by the digestive system than magnesium oxide, and usually more expensive. Typical serving across the market: 100mg – 375mg elemental. Published human research: moderate.

Vitamin C
80mg

One of the few ingredients here with an authorised health claim in the UK and EU. Often included alongside collagen for that reason. Typical serving across the market: 40mg – 500mg. Published human research: extensive.

Other ingredients

Potassium 150mg, Natural cucumber and mint flavour, Steviol glycosides.

Format
Sachets
Serving size
1 sachet
Servings
30
Flavours
Cucumber and mint, Elderflower
Declared allergens
None declared
Subscription
Available
Proprietary blend
No

Read the pack, not this page

Formulations and allergen declarations change without notice. Always read the label on the pack you actually receive, particularly if you have an allergy.

Where to buy

3 retailers checked. Prices last updated in this prototype as sample data.

  • Brand direct

    Best current price

    Ships from the brand · subscription usually cheapest here

    £25

    £20 on subscription

    View at retailer

  • Nourish & Co

    Next-day delivery available · £3.95 standard

    £26.50

    View at retailer

  • Apothecary Row

    Free delivery over £40 · 3–5 working days

    £28

    View at retailer

Lowest seen in 90 days: £24.80at that price now

We may earn a commission on purchases made through these links. It does not increase the price you pay, and commission plays no part in how products are matched or ordered. Prices and formulations change frequently — check the current pack before buying.

How the cost works out

Lowest pack price
£25
Servings
30
Cost per serving
83p
Cost per 30 days
£25

Cost per serving is the fairest way to compare, because pack sizes vary enormously within the same category. It still does not account for how much active ingredient is in each serving — check that too.

Sponsored

Ashcombe Health · Private medical cover with a digital GP included, from £29 a month for a single adult. Pre-existing conditions assessed individually.

What customers say

Reviews, broken down

Aggregated themes rather than a single star rating, because the useful signal is usually in what people repeatedly complain about.

4.4

1,622 reviews

  • 5842
  • 4502
  • 3168
  • 268
  • 142
Taste
4.5
Packaging
4.4
Value for money
4.2
Ease of use
4.8
Verified purchases
79%

Aggregated from retailer reviews, brand site. Sample data for this prototype — no real customer reviews are shown, and no review here has been checked for medical accuracy.

What people liked

  • Actually pleasant to drink604
  • Not overwhelmingly salty502
  • Good on flights302

What came up repeatedly

  • Not enough for hard training302
  • Cucumber flavour divides people188

  • “The sports ones taste like seawater to me. This one I look forward to.”

    Tessa H.··Nourish & CoVerified purchase

  • “Perfect for a hot office. Would not use it for a long ride.”

    Dominic L.··Apothecary RowVerified purchase

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Before you decide

£25

83p per serving

See prices