HIGH5

HIGH5 ZERO

Ranked #8 in Electrolyte Powders

422 LP on the category ladder what's LP?

The Telegraph's Best Value and a zero-sugar formula that has been stable for years. The budget pick that does not feel like one.

Consolidated from 7 cited sources across 6 outlets

Where the cited sources landed, as we read them

6 positive sources
1 mixed source

See the sources

Flagged as a product to avoid

1 of 3 research runs entered this as a product to avoid rather than a pick.

Independent comparison of popular brands against actual sweat sodium losses found most tablet and low-dose brands, of which this is the archetypal example, are massively under-dosed for real rehydration. Ultima Replenisher Electrolyte Mix costs little more and actually replaces electrolytes.
Flagged 16 September 2026

Why the boards include products to avoid

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Pros & cons

✓ Named Best Value electrolyte by The Telegraph's expert test
✓ Stable, zero-sugar tablet formula that has barely changed in years
✓ Long-established UK endurance brand
✓ Awarded Best Value electrolytes by The Telegraph's tested guide
✓ Dissolvable tablet format keeps per-serving cost a fraction of the sachet-and-tub premium brands

✗ Massively under-dosed for real rehydration against actual sweat sodium losses
✗ Cheap flavor, weak function

The sources behind this ranking

We searched the web and YouTube for what has been published about this product, then read the articles, video transcripts and comments we found.

Evidence 3 articles and 4 video reviews

6 positive sources

ProCyclingUK Mathew Mitchell · reviewer · Apr 2026

Best overall: HIGH5 ZERO remains the easiest default for most UK cyclists. It is widely available, inexpensive and mild enough for regular training, although its sodium concentration is much lower than the strongest options here.

Read J Jono Finds Jono Finds · 4.1K subscribers · Jun 2026

Hi, this is a product review for the High5 zero electrolyte soluble tablets. I'll just show you the packet there. Nice packet. I actually like this packet.

Watch D

Decathlon Article

High5 ZERO Electrolyte Tablets deliver essential electrolytes with zero sugar, zero calories, and maximum hydration—perfect for athletes, fitness enthusiasts, and active lifestyles.

Read M Men's Running Men's Running · 1.3K subscribers · Nov 2015

definitely recommend this product um for running. Yes, definitely.

Watch M Men's Running Men's Running · 1.3K subscribers · Nov 2015

The High5 Zero X'Treme won Gold and Bronze in the Men's and Women's Running Awards in the Pre-Race Nutrition Category.

Watch C Cool Running Reviews Cool Running Reviews · 1.2K subscribers · Dec 2019

The best electrolyte tablets for runners, tried and tested over 10 years, High5 Zero Hydration Tablets. Simply dissolve one to two tablets in your 24 oz (709 ml) Polar water bottle.

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1 mixed source

Balance Journal Balance Journal · reviewer · Jul 2026

High5 Zero delivers a clean, zero-calorie effervescent tablet at a price point that beats most direct competitors. The sodium dose - 250mg per tablet - is adequate for moderate-intensity sessions and everyday hydration. It falls short of the higher-loss scenarios that serious endurance athletes face, where clinical guidance points to 500-700mg of sodium per litre of fluid. For recreational sport, casual hydration, and keto-friendly daily use, the value case is strong. For long-distance running, cycling events, or hot-weather training, the sodium ceiling is a real limitation.

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Frequently asked questions

It ranks #8 of 16 on our electrolyte powders tier list, in C tier. That placement draws on 7 cited sources across 6 outlets.

None of the 7 sources with a clear view is critical of it. Massively under-dosed for real rehydration against actual sweat sodium losses. Cheap flavor, weak function.