Night Mega Burner Review 2026Pros, Cons and Real Feedback

What is in it, per 2 capsules: N-acetyl-L-tyrosine 250 mg, L-theanine 200 mg, gymnema 200 mg, green tea extract 150 mg (60 mg EGCG), lemon balm 100 mg, grains of paradise 80 mg, saffron 30 mg, BioPerine 2 mg, vitamin B6 10 mg and magnesium 56.25 mg.

What the evidence says:

• A Cochrane review of green tea for weight loss found no weight difference outside Japan (-0.04 kg).
• L-theanine is at the dose used in a trial that measured sleep and stress scores; grains of paradise and saffron are in small trials at similar doses.
• We found no trial of "burning fat in your sleep", for this product or its formula.

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

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

• Green tea: 150 mg extract = 60 mg EGCG. The EFSA caution level is 800 mg EGCG a day, so the label is 7.5% of it. Weight effect outside Japan: none.
• L-theanine: 200 mg vs 200 mg a day for 4 weeks. 100%.
• Grains of paradise: 80 mg vs 30 to 40 mg a day in trials. About 2 to 2.7 times the trial amount; the trial extracts' 6-paradol content is not stated.
• Saffron: 30 mg vs 15.5 mg a day. About twice the trial amount, and the brand tested is not named.
• Gymnema: 200 mg (50 mg gymnemic acids). Trial dose not in the abstract; body weight fell with berberine, not gymnema.
• Vitamin B6: 10 mg, exactly the NHS 10 mg a day limit.

The directions say 2 capsules 30 minutes before bed with 300 ml of water, not on an empty stomach. A 60-capsule bottle lasts a month.

Our Transparency Score checks five things a buyer can verify. Night Mega Burner scores 2 out of 5.

• Label with doses: yes. Every ingredient has an amount in the text panel.
• Identifiable company: no. The Swiss terms name "Key Player Limited" at Dubai Airport Freezone and apply UAE law; the US terms name "NightMegaBurner.com" in Hong Kong. The brand is a registered trademark of NuviaLab Limited. No manufacturer is named.
• Refund terms in writing: yes. 10 calendar days from purchase, unused goods only.
• Independent testing shown: no. The page says "bewährte und geprüfte Inhaltsstoffe" (proven and tested ingredients) but shows no test.
• Study on the finished product: no.

NuviaLab, which also sells it, has 1.9 out of 5 from 148 reviews on Trustpilot. The page says the product causes "keinerlei Nebenwirkungen" (no side effects) while the label warns about green tea and pregnancy.

Correction. An earlier version of this review listed L-carnitine, chromium picolinate, coconut MCT and melatonin (none is in it), built its safety section on melatonin, said it was made in a GMP-compliant EU facility, and gave a $1.63 a day cost. The label states only "country of origin: European Union" and no GMP claim, and the daily cost is $1.87 for one bottle. 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 (CHF 24.99 each).
• US site: $55.99, $111.98 ($37.33 each) and $167.97 ($27.99 each).
• NuviaLab's own store: $64.99 for one bottle, $32.50 each in a 6-pack.

That is about $1.87 a day for one US bottle and $0.93 a day for six (our calculation). We could not verify shipping costs.

Refunds. The sales page offers no money-back guarantee. The terms say "Da die Key Player Limited Produkte ausschließlich per E-Mail verkauft, kann ein Kunde jederzeit innerhalb von 10 Kalendertagen gerechnet ab dem Kaufdatum des Produktes die Transaktion rückgängig machen" (the customer may cancel within 10 calendar days of purchase), after a written statement, with goods showing no signs of use. They add "Die Anwendung des EU-Rechts ist ausgeschlossen" (EU law does not apply).

• Liver: the USP review links green tea extract to liver injury reports at EGCG intakes from 140 mg a day and advises taking it with food. The label has 60 mg EGCG and says not to use it on an empty stomach.
• Vitamin B6: 10 mg a day. The NHS says "Do not take more than 10mg of vitamin B6 a day in supplements unless advised to by a doctor". Any other B6 source puts you over it.
• Drowsiness: the formula is meant to help sleep; we read no data on next-day effects.
• Ashwagandha (NuviaLab version only): case reports link it to liver injury.

The sales page says there are "no side effects". There is no clinical study on Night Mega Burner itself.