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Home › Botanicals & extracts › Inulin / FOS

OptibacBotanicals & extracts

Bifido & Fibre, 30 sachets

£16.99 for 30 sachets at Healf. 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 g71pOne 5 g dose is our comparison unit for inulin / FOS. It is not a recommendation.
A day71p
A week£4.96
A month£21.24
A year£258.39

At one 5 g dose a day, this pack lasts 24 days. A month is 30 days, so twelve of them is not quite a year.

How we worked it out

  • Servings: 30 ÷ 1 per serving = 30
  • In the pack: 30 × 4 g = 120 g
  • £16.99 ÷ 120 g × 5 g = 70.8p per 5 g
  • A week 70.8p × 7 = £4.96 · a month × 30 = £21.24 · a year × 365 = £258.39
  • 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 productHealf · 4 g a serving · £21.24 a month · a pack lasts 24 days71pshown above

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

On the label

Inulin / FOS · Inulin / FOS
4 g per serving (stated on the label)
Pack
30 sachets · 30 servings · 1 sachet(s) a serving
Cost per serving
57p (30 servings in the pack)
More label details
Sold by
Healf
What the listing says
“30 sachets” · “Ingredients per sachet” · “FOS fibres 4g”
Ingredients

Prebiotic FOS (Fructooligosaccharides); Standardised probiotic cultures (fructose, Bifidobacterium lactis BB-12®), 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 5 g dose 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
£16.99Healf
First recorded
£16.991 Oct
Checked on
20 dayssince 1 Oct
Pack price at each check.
  1. First checked at Healf: £16.99

Questions about this product

How much does Optibac Bifido & Fibre cost per 5 g?

71p per 5 g, from £16.99 for 30 sachets at Healf, checked on 20 October 2026.

How long does one pack last?

24 days at one 5 g dose. The pack holds 120 g in total.

Keep comparing

All inulin / FOSEvery form, cheapest per 5 g firstInulin / FOS guideWhat it is, why people take it, how the forms differBotanicals & extractsEverything else we price in this categoryInulin / FOS price historyEvery inulin / FOS product's price per dose and price historyBuild a basketThe cheapest way to buy several at onceHow we compareWhere every number on this page comes from