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Redmond LifeSports & performance

Re-Lyte Hydration Support Plus, 120 capsules

£21.49 for 120 capsules at Healf. That works out at 36p per serving, which ranks it 13th of the 260 electrolytes we price across 9 UK retailers.

What it really costs, per serving36pOne serving is our comparison unit for electrolytes. It is not a recommendation.
A day36p
A week£2.51
A month£10.75
A year£130.73

At one serving a day, this pack lasts 2 months. A month is 30 days, so twelve of them is not quite a year.

How we worked it out

Electrolytes

  • Servings: 120 ÷ 2 per serving = 60
  • In the pack: 60 × 1 serving = 60 servings
  • £21.49 ÷ 60 servings × 1 serving = 35.8p per serving
  • A week 35.8p × 7 = £2.51 · a month × 30 = £10.75 · a year × 365 = £130.73
  • Amount per serving: priced per serving — compare what each serving contains before choosing.

Calcium

  • Servings: 120 ÷ 2 per serving = 60
  • In the pack: 60 × 30 mg = 1.8 g
  • £21.49 ÷ 1.8 g × 500 mg = £5.97 per 500 mg calcium
  • A week £5.97 × 7 = £41.79 · a month × 30 = £179.08 · a year × 365 = £2178.85
  • Amount per serving: stated on the label.

Iodine

  • Servings: 120 ÷ 2 per serving = 60
  • In the pack: 60 × 150 µg = 9 mg
  • £21.49 ÷ 9 mg × 150 µg = 35.8p per 150 µg iodine
  • A week 35.8p × 7 = £2.51 · a month × 30 = £10.75 · a year × 365 = £130.73
  • Amount per serving: stated on the label.

Magnesium

  • Servings: 120 ÷ 2 per serving = 60
  • In the pack: 60 × 25 mg = 1.5 g
  • £21.49 ÷ 1.5 g × 100 mg = £1.43 per 100 mg magnesium
  • A week £1.43 × 7 = £10.03 · a month × 30 = £42.98 · a year × 365 = £522.92
  • Amount per serving: stated on the label.

Potassium

  • Servings: 120 ÷ 2 per serving = 60
  • In the pack: 60 × 200 mg = 12 g
  • £21.49 ÷ 12 g × 200 mg = 35.8p per 200 mg potassium
  • A week 35.8p × 7 = £2.51 · a month × 30 = £10.75 · a year × 365 = £130.73
  • 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 Hydration Orange 20 TabletsHolland & Barrett · 1 serving a serving · £7.50 a month · a pack lasts 20 days25p£5.00View at Holland & Barrett (opens in a new tab)
Electrolyte PowderOptimum Nutrition · 1 serving a serving · £9.09 a month · a pack lasts 33 days30p£10.00View at Optimum Nutrition (opens in a new tab)
Electrolyte PowderOptimum Nutrition · 1 serving a serving · £9.09 a month · a pack lasts 33 days30p£10.00View at Optimum Nutrition (opens in a new tab)
Electrolyte PowderOptimum Nutrition · 1 serving a serving · £9.09 a month · a pack lasts 33 days30p£10.00View at Optimum Nutrition (opens in a new tab)
Re-Lyte Hydration SupportHealf · 1 serving a serving · £9.24 a month · a pack lasts 2 months31p£18.49View at Healf (opens in a new tab)
This productHealf · 1 serving a serving · £10.75 a month · a pack lasts 2 months36pshown above

Switching to the Holland & Barrett pack saves £3.24 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 (opens in a new tab)
Calcium & Magnesium TabletsMyprotein · 800 mg a serving · £2.29 a month · a pack lasts 5 months8p£10.99View at Myprotein (opens in a new tab)
ZipVitCalcium 400mg with Magnesium 200mgZipVit · 400 mg a serving · £2.29 a month · a pack lasts 9 months8p£21.99View at ZipVit (opens in a new tab)
This productHealf · 30 mg a serving · £179.08 a month · a pack lasts 4 days£5.97shown above

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

How it compares: kelp

Compare every product in this form →
Sea Kelp Capsules 4200mgCheapest per 150 µg iodineSimply Supplements · 600 µg a serving · £1.87 a month · a pack lasts 5 months6p£9.99View at Simply Supplements (opens in a new tab)
IodineTogether Health · 293 µg a serving · £3.58 a month · a pack lasts 59 days12p£6.99View at Together Health (opens in a new tab)
5 Seaweed BlendHealf · 150 µg a serving · £23.49 a month · a pack lasts 30 days78p£23.49View at Healf (opens in a new tab)
This productHealf · 150 µg a serving · £10.75 a month · a pack lasts 2 months36pshown above

Ranked purely by price per 150 µg iodine. 24 combination products also contain iodine.

How it compares: magnesium blends and other forms

All 79, ranked →
ZipVitMagnesium 500mgCheapest per 100 mg magnesiumZipVit · 500 mg a serving · 33p a month · a pack lasts 4.9 years1p£19.99View at ZipVit (opens in a new tab)
Magnesium Glycinate X3Protein Works · 1.81 g a serving · 40p a month · a pack lasts 2.2 years1p£10.99View at Protein Works (opens in a new tab)
Magnesium CapsHealf · 500 mg a serving · 41p a month · a pack lasts 1.4 years1p£6.75View at Healf (opens in a new tab)
This productHealf · 25 mg a serving · £42.98 a month · a pack lasts 15 days£1.43shown above

Ranked purely by price per 100 mg magnesium. 236 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 · 200 mg a serving · £10.75 a month · a pack lasts 2 months36pshown 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)
Calcium · Other forms
30 mg per serving (stated on the label)
Pack
120 capsules · 60 servings · 2 capsule(s) a serving
Cost per serving
36p (60 servings in the pack)
More label details
Iodine · Kelp
150 µg per serving (stated on the label)
Magnesium · Blends and other forms
25 mg per serving (stated on the label)
Potassium · Citrate
200 mg per serving (stated on the label)
Claimed on the listing
vegetarian
Sold by
Healf
What the listing says
“120 caps” · “Servings Per Container: 60” · “Serving Size: 2 capsules” · “Calcium (as Calcium Lactate) ; 30 mg”
Ingredients

Ancient Sea Salt (Redmond Real Salt®), Coconut Water Powder, Hypromellose (Vegetable Capsule), Kelp Extract, Potassium (as Potassium Citrate), Calcium (as Calcium Lactate), Magnesium (as Magnesium Malate, Magnesium Glycinate), Iodine (from Kelp Extract), Potassium Citrate, Other Additive (Calcium Lactate), Magnesium Glycinate, Magnesium Malate

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
£21.49Healf
First recorded
£21.491 Oct
Checked on
20 dayssince 1 Oct
Pack price at each check.
  1. First checked at Healf: £21.49

Questions about this product

How much does Redmond Life Re-Lyte Hydration Support Plus cost per 500 mg calcium?

£5.97 per 500 mg calcium, from £21.49 for 120 capsules at Healf, checked on 20 October 2026.

How long does one pack last?

4 days at one 500 mg dose. The pack holds 1.8 g in total.

How much does Redmond Life Re-Lyte Hydration Support Plus cost per serving?

36p per serving, from £21.49 for 120 capsules at Healf, checked on 20 October 2026.

Is it the cheapest of the electrolytes in the UK?

No, it is 13th of 260. Electrolyte Powder at Bulk works out at 6p per serving.

How long does one pack last?

2 months at one serving. The pack holds 60 servings in total.

How much does Redmond Life Re-Lyte Hydration Support Plus cost per 150 µg iodine?

36p per 150 µg iodine, from £21.49 for 120 capsules at Healf, checked on 20 October 2026.

How long does one pack last?

2 months at one 150 µg dose. The pack holds 9 mg in total.

How much does Redmond Life Re-Lyte Hydration Support Plus cost per 100 mg magnesium?

£1.43 per 100 mg magnesium, from £21.49 for 120 capsules at Healf, checked on 20 October 2026.

How long does one pack last?

15 days at one 100 mg dose. The pack holds 1.5 g in total.

How much does Redmond Life Re-Lyte Hydration Support Plus cost per 200 mg potassium?

36p per 200 mg potassium, from £21.49 for 120 capsules at Healf, checked on 20 October 2026.

How long does one pack last?

2 months at one 200 mg dose. The pack holds 12 g in total.

About Redmond Life

All 37 Redmond Life products, priced per dose

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