Maizinol (UP165): The Ingredient That Boosts Melatonin Production Without Exogenous Melatonin
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Maizinol: The Ingredient That Boosts Your Melatonin Production Without Exogenous Melatonin
By REINCARN Science Team | August 2026 | 7 min read
If you follow sleep science - or if you have ever Googled "melatonin alternative" after reading about the problems with high-dose melatonin supplements - you may have come across a name that is still relatively unknown in India: Maizinol.
It is, in our view, the most significant new ingredient in the sleep supplement space in the past decade. Not because of marketing - but because of mechanism and data. Here is everything you need to know.
What Is Maizinol?
Maizinol is a standardised extract of corn silk (Zea mays L.), identified by its product code UP165. It is developed and manufactured by Unigen, Inc., a South Korean biotech company with a 30-year track record in botanical ingredient research and over 140 patents.
Corn silk - the fine, thread-like fibres on an ear of corn - has been used in traditional medicine across multiple cultures for centuries. But Maizinol is not ground-up corn silk. It is a highly standardised phytochemical extract with specific bioactive compounds isolated and concentrated for a targeted biological mechanism.
How Maizinol Works: The Endogenous Melatonin Pathway
To understand why Maizinol is different, you first need to understand how your body makes melatonin naturally.
Your brain produces melatonin in a multi-step enzymatic pathway:
- Tryptophan (amino acid from food) enters the brain
- Tryptophan hydroxylase (TPH) converts tryptophan to 5-HTP
- 5-HTP is converted to serotonin
- N-acetyltransferase (NAT) converts serotonin to N-acetylserotonin
- N-acetylserotonin is converted to melatonin
Steps 2 and 4 are the rate-limiting steps - they determine how fast the entire pathway runs. Tryptophan hydroxylase (TPH) and N-acetyltransferase (NAT) are the bottleneck enzymes.
This is fundamentally different from taking a melatonin pill. Here is why that distinction matters:
Exogenous Melatonin vs. Maizinol: A Critical Comparison
| Factor | Exogenous Melatonin (Pills/Gummies) | Maizinol (UP165) |
|---|---|---|
| Mechanism | Floods melatonin receptors (MT1, MT2) with external hormone | Upregulates TPH + NAT enzymes, boosting endogenous melatonin production |
| Dose control | Fixed dose (typically 5-10mg in India - 50-100x physiological levels) | Body self-regulates - produces what it needs, when it needs it |
| Receptor impact | Chronic supraphysiological doses cause receptor downregulation (tolerance) | No receptor flooding - natural signalling preserved |
| Pineal gland | Negative feedback loop may suppress endogenous production over time | Enhances endogenous production - supports pineal function |
| Dependency risk | Users often report difficulty sleeping without it after chronic use | No external hormone introduced - no dependency mechanism |
| Circadian timing | Melatonin is present in blood regardless of light/dark cycle | Production follows natural circadian cues (darkness-triggered) |
| Deep sleep (N3) evidence | Melatonin primarily reduces sleep onset latency (~7 min). Limited N3 data. | +94 min EEG-measured deep sleep (KGK Science 2024 RCT) |
The analogy we find most useful: exogenous melatonin is like giving a student the answers to an exam. Maizinol is like teaching them how to solve the problems. One creates dependency; the other builds capability.
The Clinical Evidence: KGK Science 2024 RCT
This is where Maizinol separates itself from most sleep ingredients. The evidence is not from a small pilot study or a subjective questionnaire. It is from a gold-standard clinical trial.
Conducted by: KGK Science (independent CRO, London, Ontario, Canada)
Participants: n=80 adults with self-reported sleep difficulties
Measurement: EEG polysomnography (the gold standard for sleep architecture measurement - electrodes on the scalp measuring actual brainwave activity, not wrist-based actigraphy or self-report)
Duration: Multi-week intervention period
Key Results
- +94 minutes of additional deep sleep (N3) - measured by EEG polysomnography. This is not self-reported. This is electrode-verified delta wave activity. To put this in context: most lifestyle interventions improve N3 by 10-20 minutes. Most supplements show 15-30 minutes in the studies that measure it at all. Ninety-four minutes is an unprecedented magnitude of improvement in over-the-counter supplementation.
- 36% reduction in cortisol levels - cortisol is the primary stress hormone and one of the strongest suppressors of N3 deep sleep. Reducing cortisol creates the hormonal conditions for deeper sleep entry and longer N3 maintenance.
SLEEP 2025 Conference Presentation
The Maizinol data was presented at the SLEEP 2025 conference - the annual meeting of the Associated Professional Sleep Societies, the largest and most prestigious sleep research conference in the world. Presentation at SLEEP indicates that the research passed peer scrutiny from the sleep science community. This is not a marketing claim - it is conference-validated clinical data.
Why Most Sleep Supplements Cannot Show This Data
Most sleep supplements in India - and globally - rely on one of two evidence strategies:
- Ingredient-level citations: They cite studies on individual ingredients (e.g., "melatonin has been shown to reduce sleep onset latency") without testing their own product or specific formulation. This is technically not wrong, but it tells you nothing about whether their product, at their dose, in their format, actually works.
- Subjective self-report: Participants fill out questionnaires like the Pittsburgh Sleep Quality Index (PSQI). These are useful but inherently biased - placebo effects are enormous in sleep research (30-40% improvement from placebo alone).
The Maizinol study used EEG polysomnography - objective, brainwave-level measurement that cannot be faked or influenced by placebo. When the EEG shows +94 minutes of delta wave activity, that is a physiological fact, not a subjective perception.
To our knowledge, no other over-the-counter sleep ingredient available in India has demonstrated this magnitude of EEG-verified deep sleep improvement. Melatonin at 5mg: Why Your Sleep Gummy Is Giving You 50x the Clinical Dose
Who Should Consider Maizinol?
Maizinol is particularly relevant for people who:
- Sleep enough hours but do not wake up refreshed - the classic N3 deficit pattern. You do not have trouble falling asleep; you have trouble recovering during sleep.
- Want to avoid exogenous melatonin - whether due to concerns about dependency, hormonal disruption, or side effects from high doses.
- Have high evening cortisol - from screen use, work stress, or chronic anxiety. The 36% cortisol reduction addresses this directly.
- Value evidence over marketing - if you are the type of person who checks PubMed before buying a supplement, Maizinol's RCT data is the kind of evidence that should matter to you.
The First Indian Supplement with Maizinol
REINCARN Night Reboot™ is the first sleep supplement launched in India featuring Maizinol (UP165) as its cornerstone ingredient. Combined with Glycine (3,000mg for thermoregulation), Magnesium Bisglycinate (80%+ bioavailability), L-Theanine (alpha wave promotion), Tart Cherry Extract (natural melatonin precursor), Vitamin B6 as P5P (melatonin synthesis cofactor), and Tagara/Valeriana wallichii (GABA agonist) - REINCARN delivers 4,602mg of total actives per sachet.
Zero melatonin. Zero hormones. Just the ingredients that help your body do what it already knows how to do - but better.
7-pack: ₹699 | 30-pack: ₹1,999. Available August 2026.
Launch offer: ₹549 (7-pack) | ₹1,699 (30-pack) | Subscribe at ₹1,499/month
Related reading:
- Deep Sleep: What It Is, Why You're Not Getting Enough, and How to Get It Back
- I Sleep 7 Hours and Still Wake Up Exhausted
- Best Sleep Supplement in India 2026
Frequently Asked Questions
What is Maizinol made from?
Maizinol is a standardised extract of corn silk (Zea mays L.) - the fine, silky fibres found on ears of corn. It is developed by Unigen, Inc. and identified by the product code UP165. It is not raw corn silk - it is a highly standardised phytochemical extraction with specific bioactive compounds concentrated for a targeted biological effect on the melatonin synthesis pathway.
Is Maizinol the same as melatonin?
No. Maizinol is not melatonin and does not contain melatonin. Instead, it upregulates the enzymes (tryptophan hydroxylase and N-acetyltransferase) that your body uses to produce its own melatonin naturally. This means your pineal gland makes more melatonin through its natural pathway, at the right circadian timing, rather than being flooded with an external hormone.
How much additional deep sleep does Maizinol provide?
In a 2024 randomised, double-blind, placebo-controlled trial by KGK Science (n=80, EEG polysomnography), Maizinol demonstrated +94 minutes of additional deep sleep compared to placebo. This was measured objectively via EEG brainwave monitoring, not self-report. The study also showed a 36% reduction in cortisol levels.
Does Maizinol cause dependency?
There is no known dependency mechanism for Maizinol. Unlike exogenous melatonin, which can cause receptor downregulation and suppress natural production over time, Maizinol works by enhancing your body's own melatonin synthesis. No external hormone is introduced, so there is no negative feedback loop to create tolerance or dependency.
Is Maizinol available in India?
As of August 2026, REINCARN Night Reboot™ is the first Indian sleep supplement to feature Maizinol (UP165) as a key ingredient. It is available direct-to-consumer at reincarn.in.
Can I take Maizinol with other supplements?
Maizinol has been studied and is used in combination with other sleep-supporting ingredients like glycine, magnesium, and L-theanine. Since it works through enzyme upregulation rather than receptor activation, it is mechanistically complementary to ingredients that work through different pathways (thermoregulation, GABA modulation, alpha wave promotion). However, as with any supplement, consult a healthcare professional if you are taking prescription medications.
What is UP165?
UP165 is the product identification code for Maizinol - Unigen's standardised corn silk extract. When you see "UP165" on a supplement facts panel, it confirms the product is using the same clinically studied ingredient from the KGK Science trial, not a generic corn silk extract. The code ensures traceability, standardisation, and consistency between what was studied and what is in the product.
How is the Maizinol study different from other sleep supplement studies?
Most sleep supplement studies rely on subjective questionnaires (self-reported sleep quality) which are heavily influenced by placebo effects. The Maizinol study used EEG polysomnography - electrodes placed on the scalp that directly measure brainwave activity including delta waves (deep sleep). This is the gold standard in sleep research and cannot be influenced by participant expectations or placebo. The +94 minute deep sleep improvement is an objective, physiological measurement.
References
- KGK Science (2024). Randomized, double-blind, placebo-controlled trial of Maizinol (UP165) on sleep architecture. n=80, EEG polysomnography. Results: +94 min N3 deep sleep, 36% cortisol reduction. Presented at SLEEP 2025 conference (Associated Professional Sleep Societies annual meeting).
- Claustrat, B., Brun, J., & Chazot, G. (2005). "The basic physiology and pathophysiology of melatonin." Sleep Medicine Reviews, 9(1), 11-24. PMID: 15649735
- Ferracioli-Oda, E., et al. (2013). "Meta-analysis: melatonin for the treatment of primary sleep disorders." PLoS ONE, 8(5), e63773. PMID: 23691095
- Auld, F., et al. (2017). "Evidence for the efficacy of melatonin in the treatment of primary adult sleep disorders." Sleep Medicine Reviews, 34, 10-22. PMID: 28648359
- Wurtman, R. J. (2005). "Melatonin." In Encyclopedia of Dietary Supplements. MIT research on physiological melatonin dosing (0.1-0.3mg).
- Xie, L., et al. (2013). "Sleep drives metabolite clearance from the adult brain." Science, 342(6156), 373-377. PMID: 24136970
- Buckley, T. M., & Schatzberg, A. F. (2005). "On the interactions of the HPA axis and sleep." J Clin Endocrinol Metab, 90(5), 3106-3114. PMID: 15728214
Legal Disclaimers
Not medical advice: This article is for informational and educational purposes only. It does not constitute medical advice, diagnosis, or treatment. Always consult a qualified healthcare professional before starting, stopping, or changing any supplement, medication, or health regimen.
FSSAI compliance: REINCARN Night Reboot is a dietary/health supplement. This product is not intended to diagnose, treat, cure, or prevent any disease. The Food Safety and Standards Authority of India (FSSAI) regulates dietary supplements in India.
Last updated: August 2026. Information reflects data available at the time of publication.