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Tom’s Weight LossRankings

Supplements

Third-party tested supplements

Products that publish something about independent testing, and what each one actually claims was tested.

Supplements are not reviewed by the FDA before sale, so independent testing is the main check that a product contains what the label says. The phrase covers a wide range: some brands here name the testing scope — identity, purity, potency, label accuracy — and link results, while others simply say "third-party tested" and stop. Read what each one actually claims.

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

CoreAge Rx Strong Suit

5g of plain creatine monohydrate, nothing else — the correct dose of the best-evidenced ingredient on this site

Form
Unflavoured powder — one 5g scoop daily
From
$19
#4Third-party tested

CoreAge Rx Green Scene

Seven organic greens in a 4.5g blend — with roughly a fifth of each scoop being flavouring

Form
Powder — one 5.6g scoop daily
From
$29
#5Third-party tested

Metagenics UltraFlora Control

The one probiotic here whose exact strain and dose were used in a published weight trial

Form
Capsule — one daily
From
Not published
#6Third-party tested

Momentous Berberine

NSF Certified for Sport berberine — but 550mg is the complex, not the berberine

Form
Capsule — 1 to 3 daily before meals
From
$37.49
#7Third-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
#8Third-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
#9Third-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
#10Third-party tested

SoWell Protein

25g of whey isolate per serving, third-party tested, aimed at lean mass on a GLP-1

Form
Powder in single-serve packets
From
$40.49
#11Third-party tested

SoWell Electrolytes

1,000+ mg of electrolytes with B6 for nausea — a specific answer to a specific problem

Form
Powder in single-serve stick packs
From
$31.49
#12Third-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
#17Third-party tested

Double Wood Dihydroberberine

A genuinely different molecule, not a marketing variant — with the same interaction risk

Form
Capsule
From
$22.95
#22Third-party tested

Satiety Now Gymnema Tincture

The 'sugar destroyer' — a real and genuinely strange effect, with no dose published

Form
Liquid tincture
From
$19.99
#23Third-party tested

Toniiq Dihydroberberine 1000

200mg of GlucoVantage — and two claims on the same page that cannot both be true

Form
Capsule — 2 capsules daily with a meal
From
$24.97
#24Third-party tested

Toniiq Akkermansia 50

50 billion heat-treated Akkermansia, measured in TFU — and the unit choice is the honest one

Form
Delayed-release capsule — 2 capsules once daily
From
$24.97
#25Third-party tested

Pendulum GLP-1 Probiotic

Three strains at $64 — and the clearest disclaimer any product in this directory prints

Form
Capsule
From
$64
#26Third-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
#27Third-party tested

1MD Nutrition GlucoseMD

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

Form
Capsule
From
$54
#28Third-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
#33Third-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
#34Third-party tested

SoWell Balanced Berberine

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

Form
Capsule
From
$37.8
#35Third-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
#36Third-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
#37Third-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
#38Third-party tested

Cymbiotika Metabolic Health

Names every ingredient including OEA, publishes its batch testing, and warns diabetics to speak to a doctor first

Form
Capsule
From
$66
#39Third-party tested

NutriFlair DihydroBerberine 250mg

The highest published per-capsule dose here at 250 mg, third-party tested — but check the supply arithmetic

Form
Capsule
From
$29.99
#42Third-party tested

Utzy Naturals Berbercol

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

Form
Capsule
From
Not published
#44Third-party tested

Zhou Nutrition Dihydroberberine

Single-ingredient and lab verified, but sells on “maximum strength” without publishing the strength

Form
Veggie capsule
From
$25.49
#47Third-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