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Sports & performanceVegan

Impact Hydrate | Electrolyte Powder, Lemon and Lime

£18.49 for 40 servings at Myprotein. That works out at 46p per serving, which ranks it 15th of the 260 electrolytes we price across 9 UK retailers.

What it really costs, per serving46pOne serving is our comparison unit for electrolytes. It is not a recommendation.

A day46p

A week£3.24

A month£13.87

A year£168.72

At one serving a day, this pack lasts 40 days. A month is 30 days, so twelve of them is not quite a year.

How we worked it out

Electrolytes

In the pack: 40 × 1 serving = 40 servings
£18.49 ÷ 40 servings × 1 serving = 46.2p per serving
A week 46.2p × 7 = £3.24 · a month × 30 = £13.87 · a year × 365 = £168.72
Amount per serving: priced per serving — compare what each serving contains before choosing.

Calcium

In the pack: 40 × 52.8 mg = 2.11 g
£18.49 ÷ 2.11 g × 500 mg = £4.38 per 500 mg calcium
A week £4.38 × 7 = £30.64 · a month × 30 = £131.32 · a year × 365 = £1597.74
Amount per serving: stated on the label.

Magnesium

In the pack: 40 × 63.4 mg = 2.54 g
£18.49 ÷ 2.54 g × 100 mg = 72.9p per 100 mg magnesium
A week 72.9p × 7 = £5.10 · a month × 30 = £21.87 · a year × 365 = £266.12
Amount per serving: stated on the label.

Potassium

In the pack: 40 × 82.5 mg = 3.3 g
£18.49 ÷ 3.3 g × 200 mg = £1.12 per 200 mg potassium
A week £1.12 × 7 = £7.84 · a month × 30 = £33.62 · a year × 365 = £409.02
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 →

Electrolyte PowderOptimum Nutrition · 1 serving a serving · £9.09 a month · a pack lasts 33 days30p£10.00View at Optimum Nutrition

Re-Lyte Hydration SupportHealf · 1 serving a serving · £9.24 a month · a pack lasts 2 months31p£18.49View at Healf

Re-Lyte Hydration Support PlusHealf · 1 serving a serving · £10.75 a month · a pack lasts 2 months36p£21.49View at Healf

Re-Lyte HydrationHealf · 1 serving a serving · £13.68 a month · a pack lasts 6 months46p£79.79View at Healf

This productMyprotein · 1 serving a serving · £13.87 a month · a pack lasts 40 days46pshown above

Switching to the Optimum Nutrition pack saves £4.78 a month at one serving a day.

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

How it compares: other forms of calcium

All 25, ranked →

Calcium 1000mg & Vitamin D3 400iu TabletsCheapest per 500 mg calciumSimply Supplements · 1 g a serving · 94p a month · a pack lasts 12 months3p£11.29View at Simply Supplements

Calcium & Magnesium TabletsMyprotein · 800 mg a serving · £2.29 a month · a pack lasts 5 months8p£10.99View at Myprotein

ZipVitCalcium 400mg with Magnesium 200mgZipVit · 400 mg a serving · £2.29 a month · a pack lasts 9 months8p£21.99View at ZipVit

This productMyprotein · 52.8 mg a serving · £131.32 a month · a pack lasts 4 days£4.38shown above

Ranked purely by price per 500 mg calcium. 216 combination products also contain calcium.

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

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

Magnesium CitrateHealf · 400 mg a serving · £1.54 a month · a pack lasts 11 months5p£16.45View at Healf

This productMyprotein · 63.4 mg a serving · £21.87 a month · a pack lasts 25 days73pshown 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 chloride

Compare every product in this form →

Liquid PotassiumCheapest per 200 mg potassiumHealf · 99 mg a serving · £34.81 a month · a pack lasts 15 days£1.16£17.23View at Healf

This productMyprotein · 82.5 mg a serving · £33.62 a month · a pack lasts 17 days£1.12shown above

Ranked purely by price per 200 mg potassium. 149 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)
Calcium · Other forms: 52.8 mg per serving (stated on the label)
Pack: 40 servings · 5.6 g a serving
Cost per serving: 46p (40 servings in the pack)

More label details

Magnesium · Citrate: 63.4 mg per serving (stated on the label)
Potassium · Chloride: 82.5 mg per serving (stated on the label)
Claimed on the listing: vegan, vegetarian
Barcode: 5059883479026
Sold by: Myprotein
What the listing says: “40servings” · “Mix 5.6g” · “Calcium ; 52.8mg ; 106mg”

Ingredients

Coconut Water Powder, Electrolyte Complex (33%) (Sodium Citrate, Magnesium Salts of Citric Acid, Calcium Chloride, Potassium Chloride), Acids (Citric Acid, Malic Acid), Natural Flavouring, Inulin, Sweeteners (Sucralose, Acesulfame K), Curcuma Oil Extract, Spirulina Extract.

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

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Daily doseservingFordays

One serving is our comparison unit, not a recommendation.

Price history

No price change since 3 October 2026. Checked on 18 days, most recently 20 October 2026.

Price at every check: £18.49Myprotein
First recorded: £18.493 Oct
Checked on: 18 dayssince 3 Oct

Pack price at each check.

3 OctFirst checked at Myprotein: £18.49

Questions about this product

How much does Myprotein Impact Hydrate | Electrolyte Powder cost per 500 mg calcium?

£4.38 per 500 mg calcium, from £18.49 for 40 servings at Myprotein, checked on 20 October 2026.

How long does one pack last?

4 days at one 500 mg dose. The pack holds 2.11 g in total.

How much does Myprotein Impact Hydrate | Electrolyte Powder cost per serving?

46p per serving, from £18.49 for 40 servings at Myprotein, checked on 20 October 2026.

Is it the cheapest of the electrolytes in the UK?

No, it is 15th of 260. Electrolyte Powder at Bulk works out at 6p per serving.

How long does one pack last?

40 days at one serving. The pack holds 40 servings in total.

How much does Myprotein Impact Hydrate | Electrolyte Powder cost per 100 mg magnesium?

73p per 100 mg magnesium, from £18.49 for 40 servings at Myprotein, checked on 20 October 2026.

How long does one pack last?

25 days at one 100 mg dose. The pack holds 2.54 g in total.

How much does Myprotein Impact Hydrate | Electrolyte Powder cost per 200 mg potassium?

£1.12 per 200 mg potassium, from £18.49 for 40 servings at Myprotein, checked on 20 October 2026.

How long does one pack last?

17 days at one 200 mg dose. The pack holds 3.3 g in total.

About Myprotein

Founded 2004 · Manchester, England · Part of THG plc

Myprotein is a sports nutrition brand founded in 2004 by Oliver Cookson and bought in 2011 by The Hut Group, now the London-listed THG plc. It is based in Manchester and is part of THG's nutrition division.

All 558 Myprotein products, priced per dose Visit Myprotein (opens in a new tab)