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Botanicals & extractsVegan

Prebiotic Inulin Fibre Powder, 360 g

£12.49 for 360 g at Myprotein. That works out at 17p per 5 g, which ranks it 3rd of the 10 inulin / FOS products we price across 5 UK retailers.

What it really costs, per 5 g17pOne 5 g dose is our comparison unit for inulin / FOS. It is not a recommendation.

A day17p

A week£1.21

A month£5.20

A year£63.32

At one 5 g dose 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

Servings: 360 ÷ 12 per serving = 30
In the pack: 30 × 12 g = 360 g
£12.49 ÷ 360 g × 5 g = 17.3p per 5 g
A week 17.3p × 7 = £1.21 · a month × 30 = £5.20 · a year × 365 = £63.32
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 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

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

This productMyprotein · 12 g a serving · £5.20 a month · a pack lasts 2 months17pshown above

Switching to the Simply Supplements pack saves 56p a month at the same 5 g dose.

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

On the label

Inulin / FOS · Inulin / FOS: 12 g per serving (stated on the label)
Pack: 360 g · 30 servings · 12 g a serving
Cost per serving: 42p (30 servings in the pack)

More label details

Claimed on the listing: vegan, vegetarian
Barcode: 5056104521052
Sold by: Myprotein
What the listing says: “360g” · “30 SERVINGS” · “Per 12g” · “Add 12g”

Ingredients

Chicory Inulin (100%).

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

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Daily dosemgFordays

One 5 g dose 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: £12.49Myprotein
First recorded: £12.493 Oct
Checked on: 18 dayssince 3 Oct

Pack price at each check.

3 OctFirst checked at Myprotein: £12.49

Questions about this product

How much does Myvitamins Prebiotic Inulin Fibre Powder cost per 5 g?

17p per 5 g, from £12.49 for 360 g at Myprotein, checked on 20 October 2026.

Is it the cheapest inulin / FOS in the UK?

No, it is 3rd of 10. High Fibre Inulin Powder at Simply Supplements works out at 15p per 5 g.

How long does one pack last?

2 months at one 5 g dose. The pack holds 360 g in total.

About Myvitamins

Founded 2012 · Manchester, England · Part of THG plc

Myvitamins is a vitamins and supplements brand launched in August 2012 by The Hut Group, now THG plc, as a sister brand to Myprotein. It is run by THG Nutrition, part of Manchester-based THG.

All 118 Myvitamins products, priced per dose Visit Myvitamins (opens in a new tab)