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TraceSports & performance

TM Zerolyte Salty Watermelon, 30 sachets

£32.99 for 30 sachets at Healf. That works out at £1.10 per serving, which ranks it 121st of the 260 electrolytes we price across 9 UK retailers.

What it really costs, per serving£1.10One serving is our comparison unit for electrolytes. It is not a recommendation.
A day£1.10
A week£7.70
A month£32.99
A year£401.38

At one serving a day, this pack lasts 30 days. A month is 30 days, so twelve of them is not quite a year.

How we worked it out

Electrolytes

  • Servings: 30 ÷ 1 per serving = 30
  • In the pack: 30 × 1 serving = 30 servings
  • £32.99 ÷ 30 servings × 1 serving = £1.10 per serving
  • A week £1.10 × 7 = £7.70 · a month × 30 = £32.99 · a year × 365 = £401.38
  • Amount per serving: priced per serving — compare what each serving contains before choosing.

Magnesium

  • Servings: 30 ÷ 1 per serving = 30
  • In the pack: 30 × 80 mg = 2.4 g
  • £32.99 ÷ 2.4 g × 100 mg = £1.37 per 100 mg magnesium
  • A week £1.37 × 7 = £9.62 · a month × 30 = £41.24 · a year × 365 = £501.72
  • Amount per serving: stated on the label.

Potassium

  • Servings: 30 ÷ 1 per serving = 30
  • In the pack: 30 × 500 mg = 15 g
  • £32.99 ÷ 15 g × 200 mg = 44p per 200 mg potassium
  • A week 44p × 7 = £3.08 · a month × 30 = £13.20 · a year × 365 = £160.55
  • Amount per serving: stated on the label.

The standard dose is a comparison unit, not a recommendation. Always confirm the price on the retailer's site. How we compare everything.

Cheaper electrolytes

All 260, ranked →
Everyday Hydration SaltsHealf · 1 serving a serving · £32.49 a month · a pack lasts 30 days£1.08£32.49View at Healf (opens in a new tab)
Everyday Hydration SaltsHealf · 1 serving a serving · £32.49 a month · a pack lasts 30 days£1.08£32.49View at Healf (opens in a new tab)
Everyday Hydration SaltsHealf · 1 serving a serving · £32.49 a month · a pack lasts 30 days£1.08£32.49View at Healf (opens in a new tab)
Hydration+ Liver HealthHealf · 1 serving a serving · £32.64 a month · a pack lasts 30 days£1.09£32.64View at Healf (opens in a new tab)
TM Zerolyte Salty CitrusHealf · 1 serving a serving · £32.99 a month · a pack lasts 30 days£1.10£32.99View at Healf (opens in a new tab)
This productHealf · 1 serving a serving · £32.99 a month · a pack lasts 30 days£1.10shown above

Switching to the Healf pack saves 50p a month at one serving a day.

Ranked purely by price per serving. 32 combination products also contain electrolytes.

How it compares: magnesium citrate

All 38, ranked →
Magnesium Citrate Tablets 700mgCheapest per 100 mg magnesiumSimply Supplements · 700 mg a serving · 50p a month · a pack lasts 2.3 years2p£13.99View at Simply Supplements (opens in a new tab)
Natures AidMagnesium Citrate 750mg 60 CapsulesLloyds Pharmacy · 750 mg a serving · 76p a month · a pack lasts 1.2 years3p£11.45View at Lloyds Pharmacy (opens in a new tab)
Magnesium CitrateHealf · 400 mg a serving · £1.54 a month · a pack lasts 11 months5p£16.45View at Healf (opens in a new tab)
This productHealf · 80 mg a serving · £41.24 a month · a pack lasts 24 days£1.37shown above

Ranked purely by price per 100 mg magnesium. Labels here do not all state the same thing: this one gives stated on the label, the cheapest gives estimated from the compound weight using our conversion factor. Check both before choosing. 187 combination products also contain magnesium.

How it compares: potassium citrate

All 6, ranked →
Potassium Citrate 1300mg with Vitamin CCheapest per 200 mg potassiumSimply Supplements · 1.3 g a serving · 27p a month · a pack lasts 3.2 years1p£10.69View at Simply Supplements (opens in a new tab)
WeightWorldPotassium Citrate With Vitamin C TabletsWeightWorld · 801 mg a serving · £1.46 a month · a pack lasts 12 months5p£17.49View at WeightWorld (opens in a new tab)
Potassium CitrateHealf · 99 mg a serving · £2.86 a month · a pack lasts 3 months10p£8.49View at Healf (opens in a new tab)
This productHealf · 500 mg a serving · £13.20 a month · a pack lasts 2 months44pshown above

Ranked purely by price per 200 mg potassium. Labels here do not all state the same thing: this one gives stated on the label, the cheapest gives estimated from the compound weight using our conversion factor. Check both before choosing. 104 combination products also contain potassium.

On the label

Electrolytes · Electrolytes (per serving)
1 serving per serving (priced per serving — compare what each serving contains before choosing)
Magnesium · Citrate
80 mg per serving (stated on the label)
Pack
30 sachets · 30 servings · 1 sachet(s) a serving
Cost per serving
£1.10 (30 servings in the pack)
More label details
Potassium · Citrate
500 mg per serving (stated on the label)
Claimed on the listing
sugar-free
Sold by
Healf
What the listing says
“30 sachets” · “Servings Per Container 30” · “Serving Size 1 packet” · “Chloride (from Sea Salt) ; 1500mg” · “Magnesium (as Magnesium Citrate) ; 80mg” · “Potassium (as Potassium Citrate) ; 500mg” · “Sodium (from Sea Salt) ; 1000mg”
Ingredients

Magnesium (as Magnesium Citrate) Chloride (from Sea Salt) Sodium (from Sea Salt) Potassium (as Potassium Citrate) ConcenTrace Trace Minerals Coconut Water Powder Other Ingredients: Ancient Sea Salt, citric acid, natural flavors, stevia leaf extract (Reb A), silicon dioxide."

From the Healf listing. Check the pack itself if you have an allergy: labels mark allergens in bold.

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One serving is our comparison unit, not a recommendation.

Price history

No price change since 1 October 2026. Checked on 20 days, most recently 20 October 2026.

Price at every check
£32.99Healf
First recorded
£32.991 Oct
Checked on
20 dayssince 1 Oct
Pack price at each check.
  1. First checked at Healf: £32.99

Questions about this product

How much does Trace TM Zerolyte Salty Watermelon cost per serving?

£1.10 per serving, from £32.99 for 30 sachets at Healf, checked on 20 October 2026.

Is it the cheapest of the electrolytes in the UK?

No, it is 121st of 260. Electrolyte Powder at Bulk works out at 6p per serving.

How long does one pack last?

30 days at one serving. The pack holds 30 servings in total.

How much does Trace TM Zerolyte Salty Watermelon cost per 100 mg magnesium?

£1.37 per 100 mg magnesium, from £32.99 for 30 sachets at Healf, checked on 20 October 2026.

How long does one pack last?

24 days at one 100 mg dose. The pack holds 2.4 g in total.

How much does Trace TM Zerolyte Salty Watermelon cost per 200 mg potassium?

44p per 200 mg potassium, from £32.99 for 30 sachets at Healf, checked on 20 October 2026.

How long does one pack last?

2 months at one 200 mg dose. The pack holds 15 g in total.

About Trace

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