Disclosure: This review contains paid (affiliate) links to the official Night Mega Burner website. If you buy through them, I may earn a commission at no extra cost to you. It does not change how I evaluate the evidence.
Medical Disclaimer: This review is for informational purposes only and is not medical advice. Talk to a qualified healthcare professional before starting any supplement, especially if you are pregnant, breastfeeding, take medication, or have a health condition.
Table of Contents
- Quick Verdict
- What Is Night Mega Burner?
- Ingredient Analysis
- Safety, Side Effects & Interactions
- Pros and Cons
- Who Should (and Shouldn't) Consider Night Mega Burner?
- How Night Mega Burner Compares
- Frequently Asked Questions
- Final Verdict
"Burn fat while you sleep" is an easy promise to like. You take two capsules at night, go to bed, and let the formula do the work. But if you are about to spend money on it, you probably want to know one thing first: does the research behind the ingredients actually support that promise?
Night Mega Burner is a stimulant-free nighttime supplement. It combines ingredients studied for sleep and relaxation (saffron, L-theanine, lemon balm) with ingredients studied for energy expenditure and weight (grains of paradise, green tea, gymnema).
There is also something most reviews miss. The formula on the official Night Mega Burner website has changed. The ashwagandha that older reviews focus on is no longer on that label. This review covers the current formula.
How this review was done: I haven't personally used Night Mega Burner. This is a research-based review. I checked the official label on two company websites, compared each key ingredient and dose with published studies, and scored the formula on five criteria explained in the verdict.
Quick Verdict
- Evidence Score: 3.0 / 5 (based on published research, not personal use)
- Best for: Adults who sleep poorly under stress and want a caffeine-conscious product to use alongside diet and activity changes
- Not for: Anyone expecting weight loss from the capsules alone, people on diabetes medication without medical advice, and anyone pregnant or breastfeeding
- Biggest strength: The saffron dose (30 mg) matches doses used in several placebo-controlled sleep trials
- Biggest limitation: The fat-loss side of the formula rests on small, often sponsor-linked studies, and no trial has tested the finished product
If you already know this profile fits you, see the current Night Mega Burner label and pack options (paid link)
What Is Night Mega Burner?
Night Mega Burner is a capsule supplement taken at night. Each pack holds 60 vegetarian capsules, which is a 30-day supply. The directions are 2 capsules with 300 ml of water, 30 minutes before bedtime. The label says not to take it on an empty stomach.
The product is sold online through its official website. The site's privacy policy lists the seller as NightMegaBurner.com, Stanley Street, Hong Kong, and the country of origin as the European Union. The same product also appears on the NuviaLab brand website.
The two labels don't match. When I checked both sites on September 22, 2026, the official Night Mega Burner site listed Gymnema sylvestre extract (GS4PLUS®) 200 mg. The NuviaLab product page still listed KSM-66® ashwagandha 200 mg in the same place. Every other ingredient and amount was the same. Because the affiliate links on this page lead to the official Night Mega Burner site, this review analyzes the gymnema version. Check the label on your own pack before you take it.
The current formula per 2 capsules:
- N-acetyl-L-tyrosine 250 mg
- L-theanine (from green tea) 200 mg
- Gymnema sylvestre leaf extract (25% gymnemic acids, GS4PLUS®) 200 mg
- Green tea leaf extract (40% EGCG) 150 mg
- Lemon balm herb extract 100 mg
- Grains of paradise seed extract (12.5% 6-paradol) 80 mg
- Saffron stigma extract (0.4% crocins, 0.4% safranal, Saffr'Activ®) 30 mg
- Black pepper fruit extract (95% piperine, BioPerine®) 2 mg
- Vitamin B6 10 mg (714% NRV) and magnesium (Aquamin™ Mg) 56.25 mg (15% NRV)
The label warns that it is not suitable for children or for pregnant or breastfeeding women. It also says not to take 800 mg or more of EGCG a day, and not to use it on days you take other green tea products. I did not find an allergen statement on either site.
The site sells single packs and multi-pack bundles, and bundles lower the cost per month. Prices change by country, so check the current pricing on the official site. The terms I found allow you to withdraw from a purchase within 10 calendar days, and the goods must be unused and in their packaging. I did not find a separate money-back guarantee.
There is no published clinical trial on the finished Night Mega Burner formula. Everything below is research on individual ingredients.
Ingredient Analysis
One rule shapes this section. Research on an ingredient is not research on this product. Doses, extracts, and study groups differ, and a mix of ten ingredients has never been tested as a whole.
| Ingredient | Amount per daily serving | Evidence level |
|---|---|---|
| Saffron extract | 30 mg | Moderate (sleep quality) |
| L-theanine | 200 mg | Moderate (small sleep effects) |
| Grains of paradise extract | 80 mg | Limited (energy use, visceral fat) |
| Green tea extract (40% EGCG) | 150 mg | Limited (weight, without caffeine) |
| Gymnema extract | 200 mg | Limited (weight and cravings) |
| Lemon balm extract | 100 mg | Limited (sleep) |
| N-acetyl-L-tyrosine, B6, magnesium, piperine | 250 mg / 10 mg / 56.25 mg / 2 mg | Supporting nutrient |
Saffron Extract (Saffr'Activ®) — 30 mg
Saffron has the strongest sleep evidence in this formula. A 2022 meta-analysis of randomized trials in Sleep Medicine found that saffron improved Pittsburgh Sleep Quality Index scores by about 2 points compared with placebo.
Several single trials point the same way. In a 2021 Sleep Medicine trial, 120 adults with unsatisfactory sleep took 14 mg or 28 mg of a saffron extract (affron®) 1 hour before bed for 28 days. Sleep quality ratings improved more than with placebo, though several other sleep measures did not differ. In a 2025 trial in Sleep Medicine: X, 165 adults with moderate insomnia took 20 mg or 30 mg of a different extract (Safr'Inside™) for 4 weeks. Insomnia scores improved more than with placebo. That trial was supported by the extract's maker.
Two limits matter here. First, these trials tested other branded extracts. I found no published sleep trial of Saffr'Activ® itself; the supplier describes a 2014 study of 30 people, but gives no journal to check. Second, the label lists 0.4% crocins and 0.4% safranal, while the supplier advertises higher standardization for Saffr'Activ®. The 30 mg dose matches the trials, but the extract is not the same one they used.
L-Theanine — 200 mg
L-theanine is an amino acid from tea. A 2025 meta-analysis in Sleep Medicine Reviews pooled 19 randomized trials with 897 participants. L-theanine was linked to slightly faster sleep onset, better daytime functioning, and better overall sleep quality scores. The effect sizes were small, and the authors noted that few studies tested L-theanine on its own. The 200 mg dose is a common amount in this research.
Grains of Paradise Seed Extract — 80 mg
Grains of paradise (Aframomum melegueta) is a spice in the ginger family. It is the main "fat-burning" ingredient in the formula.
- A 2013 study in the British Journal of Nutrition gave 19 young men a single 40 mg dose. Energy expenditure rose within 2 hours, but only in men with active brown fat.
- A 2014 study in the Journal of Nutritional Science and Vitaminology gave 19 young women 30 mg a day for 4 weeks in a single-blind crossover design. Visceral fat fell slightly compared with placebo, and total body fat did not change.
- A 2022 trial in Drug Design, Development and Therapy gave 70 overweight adults 250 mg of an extract twice a day (500 mg daily) for 12 weeks. Energy expenditure rose and visceral fat fell compared with placebo. Two authors worked for the company that makes that extract.
The 80 mg dose sits above the small Japanese studies but well below the 500 mg used in the larger trial. The studies are small, and the biggest one is sponsor-linked. That makes the evidence limited, not strong.
Green Tea Leaf Extract (40% EGCG) — 150 mg
This amount provides about 60 mg of EGCG. Green tea is widely studied for weight, but the results are weaker than marketing suggests. A 2012 Cochrane review found an average difference of only 0.04 kg in studies done outside Japan; studies in Japan showed larger but inconsistent results. A 2010 meta-analysis in the American Journal of Clinical Nutrition found that catechins with caffeine produced modest weight changes, while catechins without caffeine showed no benefit on any body measure. Since this formula is sold as stimulant-free, the no-caffeine finding is the more relevant one.
Gymnema Sylvestre Extract (GS4PLUS®) — 200 mg
Gymnema is best known for briefly blocking sweet taste. In older studies from 1990 in the Journal of Ethnopharmacology, people with diabetes took 400 mg a day of a related extract (GS4) alongside their usual treatment, and blood sugar markers fell. Those studies had no placebo groups. Newer craving studies used gymnema mints taken around eating, not capsules at bedtime. A 2023 meta-analysis in Phytotherapy Research pooled six small trials and reported lower fasting glucose and blood lipids, but the authors rated the studies as low quality. At 200 mg, taken before bed, the link to weight loss is weak.
Lemon Balm Herb Extract — 100 mg
Lemon balm is a traditional calming herb. A 2021 meta-analysis in Phytotherapy Research found improvements in anxiety and depression scores, but the included trials varied a lot. Direct sleep evidence is thinner. I could not match the 100 mg amount to a specific trial, so its role here is best seen as supportive.
Supporting Ingredients: N-Acetyl-L-Tyrosine, Vitamin B6, Magnesium, Piperine
N-acetyl-L-tyrosine is a form of the amino acid tyrosine. I did not find controlled human trials of it for sleep or weight. Vitamin B6 (10 mg) and magnesium (56.25 mg) are basic nutrients; the magnesium amount is small. Piperine (2 mg) is added to improve absorption of other ingredients. None of these has evidence for fat loss at these doses.
If you want to check these amounts yourself, compare them with the supplement facts on the official page (paid link)
Safety, Side Effects & Interactions
Night Mega Burner uses modest doses, and the label includes clear warnings. Still, some points deserve attention before you start.
- Diabetes medication: Gymnema has lowered blood sugar markers in people with diabetes, and some study participants reduced their medication. If you take insulin or other glucose-lowering drugs, talk to your doctor first.
- Liver: NIH's LiverTox database rates gymnema as a possible rare cause of liver injury, based on isolated reports. NCCIH notes that liver injury from green tea extracts is rare. Europe's food safety authority (EFSA) linked 800 mg or more of EGCG a day to raised liver enzymes. This product gives about 60 mg, so adding other green tea supplements is the main risk.
- Medicines broken down by the liver: Piperine inhibited the drug-processing enzyme CYP3A4 and the transporter P-glycoprotein in a 2002 study. If you take prescription drugs, ask a pharmacist.
- Sleep aids and sedatives: Saffron, L-theanine, and lemon balm are studied for calming effects. If you already use sleep medication or sedatives, check with a professional before combining them.
- Vitamin B6: 10 mg is below the EU upper limit of 12 mg a day, but another multivitamin could push you over it.
- Caffeine: The site calls the formula stimulant-free. However, the label does not say the green tea extract is decaffeinated or list its caffeine content. If you are very sensitive to caffeine, keep that in mind.
- Pregnancy, breastfeeding, and children: The label says it is not suitable.
- If your pack lists ashwagandha: NCCIH says ashwagandha should be avoided in pregnancy and is not recommended for people with thyroid or autoimmune disorders. Read your label carefully.
If a health condition is the reason your weight or sleep has changed, a supplement is not the right first step. The guide to how short or broken sleep changes appetite and energy use explains which effects are real and how large they are.
Pros and Cons
Pros
- Full label disclosure. Every ingredient is listed with its amount, and most with their standardization.
- Research-matched saffron dose. 30 mg is within the range used in placebo-controlled sleep trials.
- Caffeine-conscious design. No caffeine or synephrine is added, which suits a bedtime product.
- Clear label warnings. The EGCG limit and the pregnancy warning are stated plainly.
Cons
- No trial of the finished formula. All evidence comes from single ingredients, mostly with different extracts.
- Weak fat-loss evidence. Grains of paradise studies are small, green tea without caffeine shows no clear benefit, and gymnema is dosed and timed differently from its studies.
- Labels differ between two company sites. One lists gymnema, the other ashwagandha, so buyers may not know which formula they will receive.
- Missing details. There is no allergen statement or caffeine figure, and the saffron standardization differs from the supplier's own specification.
- Limited buying protection. I found a 10-day withdrawal right but no separate money-back guarantee.
Who Should (and Shouldn't) Consider Night Mega Burner?
A reasonable fit: adults who already eat and move with a plan, and whose main problem is poor, stress-affected sleep. For them, the sleep ingredients are the part of this formula with the most support. Any weight effect should be seen as a small bonus, not the reason to buy.
Probably not a good fit:
- People who want the capsules to create weight loss on their own. No ingredient here replaces a calorie deficit. The complete guide to what happens to your metabolism overnight and which sleep habits matter most is a better starting point.
- People whose belly fat seems tied to long-term stress. It helps to understand why stress hormones can make belly fat harder to lose before adding a product.
- Anyone taking diabetes medication, sedatives, or several prescription drugs, unless a doctor agrees.
- Pregnant or breastfeeding women, and anyone under 18.
For the right person, the formula is a sleep-first product with a modest metabolic angle. Keeping that expectation will make it easier to judge whether it helps you.
If that matches what you are looking for, check shipping and withdrawal terms for your country (paid link)
How Night Mega Burner Compares
Compared with typical fat burners: most daytime fat burners rely on caffeine or other stimulants. Night Mega Burner avoids added stimulants, so it fits bedtime use better. The trade-off is that the caffeine-free versions of green tea have weaker weight evidence.
Compared with single-ingredient sleep supplements: a standalone saffron or L-theanine product gives you one ingredient at a known dose, often from a studied extract. Night Mega Burner bundles several ingredients, which is convenient but makes it harder to tell what works for you.
Compared with the basics: a steady sleep schedule, a calorie deficit you can keep up, and regular activity have far stronger evidence than any ingredient in this formula. A supplement can support those habits. It cannot replace them.
Frequently Asked Questions
Does Night Mega Burner actually work for weight loss?
No trial has tested Night Mega Burner itself. Its fat-loss ingredients have limited evidence. Grains of paradise studies are small, and the largest used about six times this dose. Green tea catechins without caffeine did not change body measures in a 2010 meta-analysis. Any effect is likely to be small and to depend on diet and activity. The sleep ingredients, especially saffron, have better support than the fat-loss ones.
What are the side effects of Night Mega Burner?
No side-effect data exist for the finished product. Its ingredients are generally well tolerated at these doses. The main cautions are low blood sugar with diabetes medication (gymnema), rare liver reactions linked to gymnema and green tea extracts, and possible interactions from piperine. Stop taking it and see a doctor if you notice yellowing skin, dark urine, or unusual tiredness.
Why does the ingredient list differ between websites?
On September 22, 2026, the official Night Mega Burner website listed gymnema extract 200 mg, while the NuviaLab product page listed KSM-66 ashwagandha 200 mg. The other ingredients matched. The company has not explained the difference publicly. Check the label on the pack you receive, especially if you have a thyroid condition or take diabetes medication.
How long does it take to see results?
The saffron sleep trials above measured changes after 4 to 6 weeks. The grains of paradise studies ran for 4 to 12 weeks. That suggests giving any product at least a month before judging it. If you see no difference in sleep after 6 weeks of steady use, it is reasonable to stop.
Is Night Mega Burner legit, and where can you buy it?
It is a real product with a full ingredient label, sold through its official website and listed on the NuviaLab brand site. The seller named on the official site is based in Hong Kong. Many pages ranking for this product are promotional posts, so rely on the official label rather than third-party claims. Buying through the official site also gives you its 10-day withdrawal terms.
Final Verdict
| Criterion | Score | Why |
|---|---|---|
| Core ingredient evidence (30%) | 2.5 | Moderate sleep evidence (saffron, L-theanine); limited fat-loss evidence; no product trial |
| Dose match (20%) | 3.0 | Saffron and L-theanine match; grains of paradise, green tea, and gymnema fall short |
| Label transparency (15%) | 3.5 | All amounts listed, but two sites differ and caffeine and allergens are not stated |
| Safety profile (20%) | 3.5 | Modest doses and clear warnings; manageable cautions for diabetes drugs and the liver |
| Value & buying terms (15%) | 2.5 | Premium-priced single packs; 10-day withdrawal only, no money-back found |
| Overall Evidence Score | 3.0 / 5 | Weighted average of the five criteria |
Night Mega Burner is best understood as a sleep supplement with a fat-loss label. The saffron and L-theanine doses line up with published sleep research. The fat-burning claims lean on small studies that do not match this dose, extract, or timing.
If you try it, set realistic goals. Look for better sleep over 4 to 6 weeks, not a change on the scale. Keep your eating and activity plan in place. If poor sleep, snoring, or unexplained weight change continues, see a doctor, since these can have medical causes that a supplement will not fix.
If you have weighed the evidence and still want to try it, read the current Night Mega Burner ordering details (paid link)
About this review: Written, researched, and fact-checked by Vijidsu, founder of this site. I checked the citations, label amounts, and study details against the official product page and the original studies. I am not a medical professional, this review was not checked by one, and I have not used Night Mega Burner myself. See how we research and review products for the full process.
