Fat Burn Active Review 2026An Honest Look at the Label

What is in it, per 2 capsules: coleus (forskolin) extract 250 mg, green tea extract 250 mg (100 mg EGCG), guarana 200 mg plus caffeine 76 mg (about 120 mg caffeine in total), phenylcapsaicin 112 mg, bitter orange 100 mg (6 mg synephrine), grains of paradise 80 mg, black pepper extract 2 mg, vitamin B6 14 mg, pantothenic acid 30 mg and zinc 10 mg.

What the evidence says:

• A Cochrane review of green tea found -0.04 kg of weight loss in trials outside Japan.
• Bitter orange's synephrine raised blood pressure and did not produce weight loss in a 2022 meta-analysis; the label's 6 mg is below the range studied.
• Forskolin is at half the dose of the trial that found fat loss; a second trial, in women, found no weight loss.
• Vitamin B6 at 14 mg is above the NHS advice of 10 mg a day in supplements.

There is no money-back guarantee; the terms allow 10 days from purchase.

Our Dose Check compares each label amount with the best human study we could read.

• Forskolin: 250 mg of extract (about 25 mg forskolin, our calculation) vs 500 mg a day in the 2005 trials. 50%.
• Green tea: 250 mg of extract, 100 mg of EGCG. The Cochrane abstract gives no dose. The EFSA links 800 mg EGCG a day and above to raised liver enzymes; the label is 12.5% of that.
• Caffeine: about 120 mg in total (44 mg from guarana plus 76 mg anhydrous, our calculation), 30% of the 400 mg a day the FDA cites for most adults.
• Bitter orange: about 6 mg synephrine vs 10 to 53 mg a day in the trials reviewed in 2012. Below the range.
• Phenylcapsaicin: 1.12 mg vs single doses of 0.625 and 2.5 mg in a 17-man exercise trial. No fat-loss trial found.
• Grains of paradise: 80 mg of extract vs 30 mg a day in the 19-woman trial. The trial extract's 6-paradol content is not in the abstract, so the two cannot be compared.
• Vitamin B6: 14 mg vs the NHS advice of no more than 10 mg a day in supplements. 140%.
• Pantothenic acid and zinc: 30 mg and 10 mg, within the NHS figures (200 mg and 25 mg).

The directions say 2 capsules a day, preferably 30 minutes before a meal or training, with about 300 ml of water. A bottle of 60 capsules lasts a month.

Our Transparency Score checks five things a buyer can verify. Fat Burn Active scores 2 out of 5.

• Label with doses: yes. All eleven lines have an amount in the text panel.
• Identifiable company: no. The Swiss and German terms name "Key Player Limited" at Dubai Airport Freezone and apply UAE law; the English terms name "FatBurnActive.com" in Hong Kong; the label names a manufacturer, "NuviaLab LLC" in Wilmington, Delaware. That is three entities, no registration number, and EU law is excluded.
• Refund terms in writing: yes. 10 calendar days from purchase, unused goods only.
• Independent testing shown: no. No lab report and no GMP claim on the official pages.
• Study on the finished product: no. The page says "Alle unsere Angaben sind durch wissenschaftliche Untersuchungen nachgewiesen" (all our claims are proven by scientific studies) and cites none.

NuviaLab, the co-seller, has 1.9 out of 5 from 148 reviews on Trustpilot; complaints concern refunds and returns.

Correction. An earlier version of this review said the product was made in the United States, GMP-certified and third-party tested (no official page says so, and the label gives the country of origin as the European Union), benchmarked it against glucomannan, L-carnitine and chromium (none is in it), showed a three-row dose table, scored it 9 out of 10 in the text and 4.1 out of 5 in the box, showed a 90-day guarantee and free shipping, and priced it at $58 a bottle and $1.93 a day. The real US prices are $53.99, $107.98 and $161.97, and there is no guarantee. We have corrected it.

Prices when we checked in September 2026:

• Swiss site (where our link leads, in German): CHF 49.99 for 1 bottle, CHF 99.98 for 2+1 (CHF 33.33 each), CHF 149.97 for 3+3 (about CHF 25 each).
• US site: $53.99, $107.98 ($35.99 each) and $161.97 ($26.99 each).
• NuviaLab's own store: $62.99, $125.98 ($41.99 each) and $188.97 ($31.50 each).

That is about $1.80 a day for one bottle on the US site and $0.90 a day for six (our calculation). We could not verify shipping costs.

Refunds. The pages offer no money-back guarantee; a "Guarantee of safety" badge is not a refund offer. The English terms say the customer may withdraw only "within 10 calendar days from the date of purchase of goods", that returns "must be preceded by a written statement" and that goods "can not bear traces of use". They add: "The application of EU law is not possible." NuviaLab's own store allows 14 days from receipt and excludes "any opened and used cosmetics, tablets or supplements".

• Caffeine: about 120 mg per serving. The label says not to use it in cardiovascular disease or with other caffeine sources. The FDA cites 400 mg a day as an amount not generally associated with negative effects in most adults.
• Bitter orange (synephrine): in the 2022 meta-analysis, systolic blood pressure rose 6.37 mmHg and diastolic 4.33 mmHg after prolonged use.
• Green tea extract: the label gives 100 mg of EGCG and says not to take 800 mg or more a day; the EFSA links 800 mg and above to raised liver enzymes. The label also says not to take it with other green tea products.
• Vitamin B6: 14 mg is above the NHS advice of 10 mg a day in supplements. The NHS says 200 mg or more can cause nerve damage.
• Zinc and pantothenic acid: within the NHS figures.

The sales pages say the capsules contain no harmful ingredients and that you need not fear side effects. The label's own cautions on caffeine and EGCG say otherwise. There is no clinical study of Fat Burn Active itself.