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Tom’s Weight LossRankings

Supplements

Best fibre supplements to take with a GLP-1

Fibre and prebiotic products compared on published grams per serving, fibre type and format.

Fibre is the ingredient in this whole category with the least disputed evidence, and it is also the one people on a GLP-1 most often need. Reduced food intake means reduced fibre intake, and constipation is among the most common complaints on these medications. The number that matters is grams per serving — a typical useful dose is three to five grams, and a product that will not publish it has omitted the point.

Featured placement

This position was chosen by us, not produced by our evidence ordering, and it did not earn the spot by out-performing anything. No money is involved — we are not paid for it and earn no commission on it. Everything below is ordered on published evidence as normal. Full terms

#1Featured placementThird-party tested

CoreAge Rx GLP-1 Support

A three-strain probiotic with prebiotic fibre, targeting the gut rather than appetite directly

Form
Delayed-release vegetarian capsule
From
$23.83

Ordered by disclosure, below the featured placement

#2Third-party tested

CoreAge Rx Full House

1,525mg of fibre in two capsules at 63¢ a day — a published total, and well below research doses

Form
Capsule — two daily
From
$19
#3Third-party tested

Momentous Fiber+

6g of fibre per serving — and it tells you experts recommend 25 to 38

Form
Powder — two scoops (6g fibre)
From
$29.99
#4Third-party tested

Align 24/7 Digestive Support Probiotic

A well-researched named strain, DNA-tested per lot — and it makes no weight loss claim at all

Form
Capsule — one daily; gummies also offered
From
Not published
#5Third-party tested

SoWell Fiber

A fibre blend built specifically around GLP-1 side effects, third-party tested

Form
Powder in single-serve stick packs
From
$31.49
#6Third-party tested

NOW Foods Glucomannan 575 mg

The first glucomannan here that actually reaches the research dose — and times it correctly

Form
Vegetarian capsule — serving size 3 capsules
From
$26.99
#9Third-party tested

Ritual GLP-1 Nutrition Support

Publishes every amount with %DV, names its suppliers, and does not pretend to be a weight product

Form
Capsule multivitamin plus plant-based protein powder
From
$77
#10Third-party tested

1MD Nutrition GlucoseMD

500mg berberine plus CinSulin — but read the cinnamon species, and the dagger on '56%'

Form
Capsule
From
$54
#11Third-party tested

1MD Nutrition FiberFitMD

Two fibre types, and it tells you the dose covers 25% of what you need

Form
Unflavoured powder — 2-scoop dose
From
$28
#13Third-party tested

Codeage Gut Muscle Formula

Six ingredients around the gut-muscle axis — with one CFU count published and the rest unquantified

Form
Flavoured powder — chocolate brownie
From
$54.99
#14Third-party tested

SoWell Balanced Berberine

900mg of berberine HCl with 400mcg chromium — both amounts published, both third-party tested

Form
Capsule
From
$37.8
#15Third-party tested

Supergut Foundational Daily Fiber

6g of prebiotic fibre per serving, with an on-the-go pack that halves the entry price

Form
Powder — unflavoured 40-serving tub
From
$50
#16Third-party tested

Life Extension Waistline Control

A patented botanical blend aimed at waist circumference, on supplier-funded evidence

Form
Capsule — 30-day supply per bottle
From
$19
#17Third-party tested

Hello100 Natural GLP-1 Booster

Publishes its two ingredients and their amounts — and also the words “scientifically proven to help users lose weight”

Form
Vegan capsule
From
$34.99
#19

Herbalife GLP-1 Nutrition Companion

States twice that it is not a drug and does not promote GLP-1 drugs — then sells a $219.99 protein and fibre bundle

Form
Powder bundle — meal replacement shake
From
$219.99
#20Third-party tested

Utzy Naturals Berbercol

600mg berberine with citrus bergamot, and a 90-day empty-bottle guarantee

Form
Capsule
From
Not published
#21

GOLO Release

Sold only alongside the company's own diet programme, with a money-back guarantee

Form
Vegetarian capsule
From
$34.95
#23Third-party tested

Bluebonnet Nutrition 5-HTP 100mg

Guarantees the product is free of Peak-X — a contamination issue most 5-HTP sellers never mention

Form
Vegetable capsule
From
$21.95
#26

1MD Nutrition BiomeMD

62 billion CFUs across 16 strains, with a 90-day money-back guarantee

Form
Capsule
From
$40
#27

Satiety Now Berberine HCl Capsules

Berberine alongside an inulin product, from a brand naming GLP-1 stimulation directly

Form
Capsule (berberine) and powder (inulin)
From
Not published
#32

Bio.me Daily Prebiotic Fiber

Two named fibres, both chosen for tolerability — the gentlest option in this section

Form
Unflavoured powder
From
$34.99
#36

Ritual Synbiotic+

Three-in-one prebiotic, probiotic and postbiotic with delayed-release delivery

Form
Capsule
From
$43.2
#40

NutraChamps Digestive Enzymes

A broad-spectrum enzyme blend for the digestive complaints that come with slowed gastric emptying

Form
Capsule
From
$20
#44

Novomins GLP-1 Support Bundle

Three gummies — vinegar, magnesium and fibre — with claims phrased as nutrient functions rather than outcomes

Form
Gummy
From
$60