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OptibacBotanicals & extracts

Gut Health Gummies, 30 gummies

£12.31 for 30 gummies at Vitamin Planet. It carries more than one active ingredient, so it is not ranked against single-ingredient products. Each price below counts one ingredient only.

What it really costs, per 5 g£2.41One 5 g dose is our comparison unit for inulin / FOS. It is not a recommendation.
A day£2.41
A week£16.90
A month£72.41
A year£881.01

At one 5 g dose a day, this pack lasts 5 days. A month is 30 days, so twelve of them is not quite a year.

How we worked it out

Inulin / FOS

  • Servings: 30 ÷ 1 per serving = 30
  • In the pack: 30 × 850 mg = 25.5 g
  • £12.31 ÷ 25.5 g × 5 g = £2.41 per 5 g
  • A week £2.41 × 7 = £16.90 · a month × 30 = £72.41 · a year × 365 = £881.01
  • Amount per serving: stated on the label.

Calcium

  • Servings: 30 ÷ 1 per serving = 30
  • In the pack: 30 × 120 mg = 3.6 g
  • £12.31 ÷ 3.6 g × 500 mg = £1.71 per 500 mg calcium
  • A week £1.71 × 7 = £11.97 · a month × 30 = £51.29 · a year × 365 = £624.05
  • Amount per serving: stated on the label.

Vitamin D3

  • Servings: 30 ÷ 1 per serving = 30
  • In the pack: 30 × 400 IU = 12,000 IU
  • £12.31 ÷ 12,000 IU × 1,000 IU = £1.03 per 1,000 IU
  • A week £1.03 × 7 = £7.18 · a month × 30 = £30.78 · a year × 365 = £374.43
  • Amount per serving: stated on the label.

Zinc

  • Servings: 30 ÷ 1 per serving = 30
  • In the pack: 30 × 8 mg = 240 mg
  • £12.31 ÷ 240 mg × 15 mg = 76.9p per 15 mg zinc
  • A week 76.9p × 7 = £5.39 · a month × 30 = £23.08 · a year × 365 = £280.82
  • 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.

How it compares: inulin / FOS

All 10, ranked →
High Fibre Inulin PowderCheapest per 5 gSimply Supplements · 5 g a serving · £4.65 a month · a pack lasts 3 months15p£15.49View at Simply Supplements (opens in a new tab)
Flourishe Gut SupplementLamberts Healthcare (Nature's Best) · 5 g a serving · £4.95 a month · a pack lasts 3 months17p£16.50View at Lamberts Healthcare (opens in a new tab)
Prebiotic Inulin Fibre PowderMyprotein · 12 g a serving · £5.20 a month · a pack lasts 2 months17p£12.49View at Myprotein (opens in a new tab)
This productVitamin Planet · 850 mg a serving · £72.41 a month · a pack lasts 5 days£2.41shown above

Ranked purely by price per 5 g. 74 combination products also contain inulin / FOS.

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 productVitamin Planet · 120 mg a serving · £51.29 a month · a pack lasts 7 days£1.71shown above

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

How it compares: vitamin D3

All 207, ranked →
WeightWorldHigh-Strength Vitamin D3 TabletsCheapest per 1,000 IUWeightWorld · 4,000 IU a serving · 17p a month · a pack lasts 4.4 years1p£8.99View at WeightWorld (opens in a new tab)
ZipVitVitamin D3 4000iuZipVit · 4,000 IU a serving · 17p a month · a pack lasts 4 years1p£8.49View at ZipVit (opens in a new tab)
WeightWorldVitamin D3 + K2 (MK7) TabletsWeightWorld · 4,000 IU a serving · 21p a month · a pack lasts 4 years1p£9.99View at WeightWorld (opens in a new tab)
This productVitamin Planet · 400 IU a serving · £30.78 a month · a pack lasts 12 days£1.03shown above

Ranked purely by price per 1,000 IU. 439 combination products also contain vitamin D3.

How it compares: zinc gluconate

All 7, ranked →
Zinc 50mgCheapest per 15 mg zincHealf · 50 mg a serving · 38p a month · a pack lasts 2.3 years1p£10.45View at Healf (opens in a new tab)
Zinc 50mgHealf · 50 mg a serving · 43p a month · a pack lasts 11 months1p£4.79View at Healf (opens in a new tab)
Zinc (25mg) 120 TabletsHolland & Barrett · 25 mg a serving · £1.45 a month · a pack lasts 7 months5p£9.69View at Holland & Barrett (opens in a new tab)
This productVitamin Planet · 8 mg a serving · £23.08 a month · a pack lasts 16 days77pshown above

Ranked purely by price per 15 mg zinc. 33 combination products also contain zinc.

On the label

Inulin / FOS · Inulin / FOS
850 mg per serving (stated on the label)
Calcium · Other forms
120 mg per serving (stated on the label)
Pack
30 gummies · 30 servings · 1 gummy(s) a serving
Cost per serving
41p (30 servings in the pack)
More label details
Vitamin D3 · Vitamin D3
400 IU per serving (stated on the label)
Zinc · Gluconate
8 mg per serving (stated on the label)
Sold by
Vitamin Planet
What the listing says
“30 Gummies” · “1 gummy a day” · “calcium 120mg, 15% NRV”
Ingredients

Fruit juice/puree (apple juice/puree concentrate, strawberry puree, raspberry puree, blackberry puree), fructooligosaccharide fibres (FOS 0.85g), tricalcium phosphate (calcium 120mg, 15% NRV*), lemon juice concentrate, zinc gluconate (zinc 8mg, 80% NRV*), black carrot juice concentrate, gelling agent: pectin, citrus fibre, live cultures: Bacillus coagulans Unique IS-2, natural flavouring, Vitamin D3 (10g/400IU, 200% NRV*); Each gummy contains 5 billion good bacteria. Guaranteed until the date of expiry.

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

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One 5 g dose is our comparison unit, not a recommendation.

Price history

No price change since 7 October 2026. Checked on 1 day, most recently 7 October 2026.

Price at every check
£12.31Vitamin Planet
First recorded
£12.317 Oct
Checked on
1 daysince 7 Oct

Checked once so far, on 7 October 2026.

  1. First checked at Vitamin Planet: £12.31

Questions about this product

How much does Optibac Gut Health Gummies cost per 500 mg calcium?

£1.71 per 500 mg calcium, from £12.31 for 30 gummies at Vitamin Planet, checked on 7 October 2026.

How long does one pack last?

7 days at one 500 mg dose. The pack holds 3.6 g in total.

How much does Optibac Gut Health Gummies cost per 5 g?

£2.41 per 5 g, from £12.31 for 30 gummies at Vitamin Planet, checked on 7 October 2026.

How long does one pack last?

5 days at one 5 g dose. The pack holds 25.5 g in total.

How much does Optibac Gut Health Gummies cost per 1,000 IU?

£1.03 per 1,000 IU, from £12.31 for 30 gummies at Vitamin Planet, checked on 7 October 2026.

How long does one pack last?

12 days at one 1,000 IU dose. The pack holds 12,000 IU in total.

How much does Optibac Gut Health Gummies cost per 15 mg zinc?

77p per 15 mg zinc, from £12.31 for 30 gummies at Vitamin Planet, checked on 7 October 2026.

How long does one pack last?

16 days at one 15 mg dose. The pack holds 240 mg in total.

Keep comparing

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