Twenty-three products, scored on dose and evidence rather than on how loudly they sell. Here is what each one is actually for.
Disclosure: we may earn a commission if you buy through links on this page, at no extra cost to you. Commissions differ by product, which is why the ranking policy is published: the score decides the band a product sits in, and nothing we earn can move it past a better-scoring one.
Most of this category is caffeine and green tea catechins in a different bottle. The differences that matter are the dose, whether anything else in the formula does anything, and what you are paying per day for it.
| # | Read full review | Best For | Doses published | $/day | Check Price |
|---|---|---|---|---|---|
| 1 | Okinawa Formula | Individuals seeking a natural approach to weight management and improved metabolism. | No | $1.43/day | Check Best Price |
| 2 | Fat Burn Active | Not recommended | Yes | $1.93/day | Check Best Price |
| 3 | Night Mega Burner | Not recommended | Yes | $0.93/day | Check Best Price |
| 4 | NuviaLab Keto | Not recommended | Yes | $0.83/day | Check Best Price |
| 5 | Acai Berry Extreme | Not recommended | No | $1.43/day | Check Best Price |
A metabolism-support blend from Just Be
Okinawa Formula offers a natural blend of ingredients aimed at supporting weight loss by enhancing metabolism and
No supplement facts panel published.
4 evidence-backed ingredients
Check Availability →Read full review →A 2-capsule fat burner with forskolin
Doses published, but forskolin is at half the trial dose, green tea showed no weight effect outside Japan, and bitter
| Ingredient | On the label | In the trials |
|---|---|---|
| Green tea [40% EGCG] | 100 mg EGCG | 250 mg EGCG40% |
| Caffeine anhydrous | 76 mg | 140 mg54% |
| Zinc | 10 mg | 8 mg125% |
A night-time capsule with L-theanine
Doses are published and the L-theanine matches a sleep trial, but green tea shows no weight effect outside Japan and
| Ingredient | On the label | In the trials |
|---|---|---|
| L-theanine | 200 mg | 100 mg200% |
| Green tea [40% EGCG] | 60 mg EGCG | 250 mg EGCG24% |
A 2-capsule weight-loss formula with
Doses published, but no BHB or MCT, garcinia at 10% of a trial dose that beat no placebo, forskolin at half the trial
| Ingredient | On the label | In the trials |
|---|---|---|
| Chromium | 40 µg | 200 µg20% |
| Green tea [40% EGCG] | 40 mg EGCG | 250 mg EGCG16% |
Five times the chromium in the formula above, at a fraction of the price per day, from a brand that prints the number.
A single-ingredient weight-loss capsule
One ingredient, no stimulants, but a '15 kg in a month' promise that no human acai study supports, at about 2.5% of the
No supplement facts panel published.
2 evidence-backed ingredients
Check Availability →Read full review →Professional grade fat burner for
Nutrigo Lab Burner is aimed at athletes in a cutting phase, with a thermogenic base and doses that are transparent
Publishes four amounts including 3,000 mg of Sinetrol, which is above the 900–1,400 mg used in its trials, but states no standardisation so the actives cannot be compared like for like.
2 evidence-backed ingredients
Check Availability →Read full review →A liquid supplement designed to support
Patriot Slim Shot offers a convenient, multi-action approach to weight management in an easy-to-consume liquid form.
No supplement facts panel published.
3 evidence-backed ingredients
Check Availability →Read full review →A comprehensive supplement designed to
Weight Loss 2.0 presents a robust, multi-action formula for those serious about sustainable weight management.
No supplement facts panel published.
3 evidence-backed ingredients
Check Availability →Read full review →A natural weight management supplement
Sumatra Slim Belly Tonic is a well-formulated natural supplement that can effectively support weight loss efforts by
No supplement facts panel published.
3 evidence-backed ingredients
Check Availability →Read full review →Enhance sleep quality to support your
SleepLean offers a unique, science-backed approach to weight management by focusing on the critical role of sleep.
No supplement facts panel published.
3 evidence-backed ingredients
Check Availability →Read full review →Liquid weight-loss drops with 0.7 mcg
The appetite ingredient is dosed at a fraction of 1% of what was studied, the rest is hidden in a tiny blend, and the
No supplement facts panel published.
3 evidence-backed ingredients
Check Availability →Read full review →A natural herbal blend designed to
All Day Slimming Tea offers a natural and gentle way to support your wellness goals.
Twelve botanicals across a morning and an evening blend, with no quantity against any of them. The evening tea is built on senna, a stimulant laxative, which is the ingredient whose amount matters most here.
The evening blend is built on senna, a stimulant laxative that regulators across the EU and UK limit to about a week of occasional use. A daily tea built on it is not a weight product, and the weight that moves is water. There is no better version of this to recommend.
3 evidence-backed ingredients
Check Availability →Read full review →Ketosis support and thermogenic formula
Keto Actives helps you reach and maintain ketosis faster for effective weight loss.
| Ingredient | On the label | In the trials |
|---|---|---|
| Caffeine anhydrous | 150 mg | 140 mg107% |
| Chromium | 60 µg | 200 µg30% |
| Green tea [40% EGCG] | 50 mg EGCG | 250 mg EGCG20% |
Four times the EGCG of the green tea in this formula, standardised and stated.
High-stimulant thermogenic for trained
Fast Burn Extreme is the most heavily stimulated formula in this ranking, which is both the pitch and the catch.
Lists Indian nettle, green tea, GS4Plus, caffeine, bitter orange, capsicum, chromium and vitamin B6. Not one milligram figure, and no panel behind a link.
Standardised to 50% EGCG, so 200 mg of EGCG per capsule against the 250 mg threshold, reached at two. GMP certified, third-party tested, panel printed on the label.
3 evidence-backed ingredients
Check Availability →Read full review →A single-ingredient weight-loss capsule
Seed powder at 19 to 38% of the studied dose, not the extract used in the better trial, and a systematic review says
No supplement facts panel published.
3 evidence-backed ingredients
Check Availability →Read full review →A caffeine, green tea and L-carnitine
Small doses of common fat-burner ingredients, a Garcinia claim with no Garcinia on the label, 'no side effects' despite
No supplement facts panel published.
2 evidence-backed ingredients
Check Availability →Read full review →A two-ingredient weight-loss capsule
No stimulants, but no human weight-loss trial of barley grass, forskolin at 10% of the studied dose, and contradictory
Two ingredients named, green barley and coleus forskohlii, with no amount for either.
3 evidence-backed ingredients
Check Availability →Read full review →Moringa-based weight management
Moringa Actives harnesses the power of moringa for natural weight management.
| Ingredient | On the label | In the trials |
|---|---|---|
| Chromium | 40 µg | 200 µg20% |
Japanese matcha-based weight loss and
Matcha Extreme combines ceremonial-grade Japanese matcha with green tea catechins at a dose that sits inside the
| Ingredient | On the label | In the trials |
|---|---|---|
| Matcha green tea | 2,250 mg leaf | 250 mg EGCG44–90% |
| Vitamin C | 60 mg | 80 mg75% |
A one-a-day weight-loss capsule with
No doses published, two stimulants despite a 'completely safe' claim, and only a 10-day return window for unused goods.
Names BioPerine, cinnamon bark, bitter orange, ginger, cayenne, chromium and guarana. One capsule a day, no amounts anywhere on the page.
One tablet is the full 200 µg used in the glucose trials, stated on the label. Natures Aid and NOW Foods publish the same figure for less.
3 evidence-backed ingredients
Check Availability →Read full review →Coffee-based weight loss drink with MCT
Cappuccino MCT combines the pleasure of coffee with effective weight loss ingredients.
| Ingredient | On the label | In the trials |
|---|---|---|
| Chromium | 40 µg | 200 µg20% |
A green coffee bean extract capsule with
The '5000 mg' is a raw-bean equivalent, chlorogenic acid is at 10 to 20% of the studied dose, the original green coffee
The name states 5,000 mg of green coffee, which is more than most, but the panel itself is not published so the chlorogenic acid content is unknown.
1 evidence-backed ingredient
Check Availability →Read full review →Scores are easy to publish and impossible to check. So here is the same ranking from the other direction: the ingredients these 22 products are actually built on, and what the trials say about each one. Follow any of them to the evidence.
These have a dose the research settled on, which means you can check a label against something. 19 of the 22 products below are built on two or more of them.
These turn up across the category without a settled effective dose behind them. That does not make them useless; it means a product should not cost more because it contains them.
Set realistic expectations. A 2021 review of 67 placebo-controlled trials found the best-performing ingredients (chitosan, glucomannan and CLA) gave only 1 to 2 kg more weight loss than placebo, below any clinically meaningful threshold. The authors found not enough evidence to recommend any of them. NCCIH adds that many "fat burners" have never been tested for safety.
Treat any supplement as a small extra alongside diet and activity. Ask a pharmacist before combining one with medicines, and ask a doctor about approved treatments if your weight affects your health.
Sources:
Products in the Weight Loss category are scored on five weighted criteria: ingredient evidence (35%) — each ingredient is checked against published RCTs and meta-analyses; dosage adequacy (25%) — we compare label doses to clinically effective amounts; safety profile (20%) — stimulant load, banned substance screening, third-party testing; value (10%) — price per serving relative to category average; user experience (10%) — taste, ease of use, and tolerability.
Goals and pathways connected to this category, buyers often compare across these.
Medical Disclaimer
The content on this page is for informational purposes only and is not intended as medical advice, diagnosis, or treatment. Always consult your physician or qualified healthcare provider before starting any new supplement regimen. Individual results may vary.