US
Kirkland

Kirkland Signature Optifiber Powder 2 Pack

  • 2 containers, 25.6 ounces
  • 190 servings listed
  • Dissolves completely in water
  • Non-thickening and grit-free
  • Unflavored natural fiber

Last refreshed Sep 11, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.

Our verdict

An unflavored fiber powder that dissolves clear and does not thicken drinks, sold in a two-pack. The fiber type and grams per serving are not listed, which limits comparison.

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ASIN: B01KR9IDQ6Category: Fiber Supplements

Overview

Stirring a serving into water leaves no grit or thickening, so this natural fiber powder disappears into a daily drink. Two containers come in the pack for a long supply.

Grit-free, non-thickening fiber is far easier to drink than gel-forming powders. The listing omits the fiber source and the amount per serving.

Who it's for

People who gave up on fiber because of gloopy textures will appreciate a powder that stays thin. Those tracking exact fiber grams should look for a listing with a full panel.

Pros and cons

Pros
  • Dissolves completely in water
  • Two containers in the pack
Cons
  • Fiber type not listed
  • No serving size in listing
  • Bulky two-pack box

Performance notes

Non-gelling fibers dissolve without swelling, which is why the drink stays thin. That also means less bulking effect per gram than gel-forming fibers.

Specifications

BrandKirkland
Dimensions & fit
Net weight25.6 ounces
Item dimensions10 x 2 x 12 inches
Item Weight3.8 pounds
Capacity & performance
Age Range DescriptionAdult
Construction & materials
ColorMulti-colored
Material FeaturesNatural
Included components
Unit Count2 containers
Other details
Item FormPowder
FlavorUnflavored
Servings190
FeaturesDissolves completely, non-thickening, grit-free
Container TypeBottle
Item ShapeRectangular
Primary Supplement TypeVitamin A

Frequently asked questions

Can I mix Kirkland Optifiber into any drink?

The listing says it dissolves completely in water and is non-thickening. Other drinks are not covered.

How many servings are in Kirkland Optifiber?

The listing shows 190 servings and 25.6 ounces for the 2 pack.

Does Kirkland Optifiber thicken drinks?

No. It is described as non-thickening and grit-free.