We earn commission on purchases made through our links. It never affects ranking: tables are ordered purely by price per dose, and no retailer or brand can pay for position.We earn commission when you buy through our links. It never affects the ranking. Full disclosure.

GP NutritionBotanicals & extractsVegan

Fibre, 56 capsules

£13.40 for 56 capsules at W-Wellness. That works out at 48p per 1 g, which ranks it 3rd of the 3 glucomannan products we price across 3 UK retailers.

What it really costs, per 1 g48pOne 1 g dose is our comparison unit for glucomannan. It is not a recommendation.
A day48p
A week£3.35
A month£14.36
A year£174.68

At one 1 g dose a day, this pack lasts 28 days. A month is 30 days, so twelve of them is not quite a year.

How we worked it out

  • Servings: 56 ÷ 2 per serving = 28
  • In the pack: 28 × 1 g = 28 g
  • £13.40 ÷ 28 g × 1 g = 47.9p per 1 g
  • A week 47.9p × 7 = £3.35 · a month × 30 = £14.36 · a year × 365 = £174.68
  • 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.

Glucomannan 500mg CapsulesCheapest per 1 gBulk · 3 g a serving · £5.16 a month · a pack lasts 3 months17p£15.49View at Bulk (opens in a new tab)
Glucomannan Fibre Capsules 3000mgSimply Supplements · 3 g a serving · £7.00 a month · a pack lasts 2 months23p£13.99View at Simply Supplements (opens in a new tab)
GP NutritionThis productW-Wellness · 1 g a serving · £14.36 a month · a pack lasts 28 days48pshown above

Switching to the Bulk pack saves £9.19 a month at the same 1 g dose.

Ranked purely by price per 1 g. 3 combination products also contain glucomannan.

On the label

Glucomannan · Glucomannan
1 g per serving (stated on the label)
Pack
56 capsules · 28 servings · 2 capsule(s) a serving
Cost per serving
48p (28 servings in the pack)
More label details
Claimed on the listing
vegan, gluten-free
Sold by
W-Wellness
What the listing says
“56 capsules” · “Per 2 caps” · “Konjac Glucomannan 1g”
Is something wrong? Tell us

Add to your basket

View basket

Your basket prices everything you take together: whole packs, delivery included, from as few websites as you like.

One 1 g dose is our comparison unit, not a recommendation.

Price history

No price change since 15 October 2026. Checked on 6 days, most recently 20 October 2026.

Price at every check
£13.40W-Wellness
First recorded
£13.4015 Oct
Checked on
6 dayssince 15 Oct
Pack price at each check.
  1. First checked at W-Wellness: £13.40

Questions about this product

How much does GP Nutrition Fibre cost per 1 g?

48p per 1 g, from £13.40 for 56 capsules at W-Wellness, checked on 20 October 2026.

Is it the cheapest glucomannan in the UK?

No, it is 3rd of 3. Glucomannan 500mg Capsules at Bulk works out at 17p per 1 g.

How long does one pack last?

28 days at one 1 g dose. The pack holds 28 g in total.

About GP Nutrition

More from GP Nutrition

Keep comparing