Home Ingredients Oligonol® (Lychee + Green Tea Polyphenol — Amino Up)
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Oligonol® (Lychee + Green Tea Polyphenol — Amino Up)

Litchi chinensis + Camellia sinensis (85%/15% blend)
Evidence Level
Moderate
3 Clinical Trials
7 Documented Benefits
3/5 Evidence Score

Oligonol® is a branded low-molecular-weight polyphenol product from Amino Up Chemical Company (Japan), combining 85% lychee fruit (Litchi chinensis) and 15% green tea (Camellia sinensis). The distinguishing pharmacokinetic feature is a proprietary process that depolymerizes high-molecular-weight lychee polyphenols (poorly absorbed) into low-molecular-weight oligomers (much better absorbed). A 10-week randomized trial at 200 mg/day showed roughly 15% visceral fat reduction, 6% subcutaneous fat reduction, ~3 cm waist reduction, and adiponectin elevation with improved insulin resistance. The trial was small (n=18) but the effect sizes were substantial. Additional small trials show cortisol and inflammatory cytokine reduction, peripheral circulation improvements, and skin health effects. The honest framing: an interesting polyphenol with promising small-trial data across multiple cardiometabolic markers, but the evidence base is dominated by small Japanese trials with industry collaboration — broader population validation remains limited.

Studied Dose Visceral fat protocol: 200 mg/day Oligonol® (50 mg twice daily) for 10 weeks. Peripheral circulation effects shown at 50 mg single dose. Standard daily range: 100-200 mg/day. Take with or without food.
Active Compound Low-molecular-weight oligomeric procyanidins (depolymerized from lychee polyphenols), monomeric flavanols (catechin, epicatechin, EGCG from green tea). Polyphenol concentration 'second only to strawberry' per manufacturer characterization

Benefits

Visceral fat reduction (10-week trial)

A 10-week randomized trial in 18 adults at 200 mg/day showed significant decreases in body weight, abdominal circumference, and visceral fat volume — roughly 15% visceral fat reduction, 6% subcutaneous fat reduction, and ~3 cm waist reduction. Insulin resistance improved with adiponectin elevation. Small sample limits definitive conclusions but effect sizes were substantial.

Supported by Trial 1

Cortisol and inflammatory cytokine reduction

Clinical evidence confirms anti-inflammatory effects through cortisol, IL-1β, and IL-6 reduction in healthy young men. Supports the broader cardiometabolic positioning beyond pure body composition effects.

Supported by Trial 2

Peripheral circulation improvement

A pilot study using infrared thermography showed 50 mg Oligonol® improved peripheral blood circulation via nitric oxide production. Demonstrates rapid microcirculatory effect with single-dose evidence — relevant for those with cold extremities or sluggish circulation.

Supported by Trial 3

Skin health and anti-aging effects

Multiple trials report skin-health applications including wrinkle and brown spot reduction. The anti-aging cosmeceutical positioning is supported by polyphenol antioxidant and anti-inflammatory effects on dermal tissue.

Supported by Trial 1, Trial 2

Exercise fatigue and endurance

Multiple trials report exercise fatigue reduction and endurance improvements. Likely combines the antioxidant, anti-inflammatory, and circulation-enhancing mechanisms — relevant for active adults and recreational athletes.

Supported by Trial 1, Trial 2

Post-meal blood glucose and lipid support

Trials show improvements in post-meal glycemic and lipid responses, supporting the cardiometabolic adjunct positioning beyond visceral fat alone.

Supported by Trial 1, Trial 3

Adiponectin elevation (mechanistic significance)

Adiponectin is a key insulin-sensitizing adipokine; circulating levels typically decrease with visceral adiposity and metabolic syndrome. Oligonol elevating adiponectin is mechanistically significant — addresses fundamental adipose dysfunction rather than only weight or body composition. Same mechanism direction as PPAR-γ agonists (thiazolidinediones) but via natural polyphenol pathways.

Supported by Trial 1

Mechanism of action

1

Low-molecular-weight oligomeric procyanidin bioavailability

The proprietary depolymerization process converts high-MW lychee polyphenols (poorly absorbed in typical lychee extracts) into low-MW oligomers that are much better absorbed. The distinguishing pharmacokinetic advantage of Oligonol vs generic lychee polyphenol products.

2

Adiponectin elevation

Adiponectin is a key insulin-sensitizing adipokine that typically decreases with visceral adiposity. Oligonol elevates adiponectin — addresses fundamental adipose dysfunction rather than only weight/body composition.

3

Insulin sensitivity improvement

Insulin sensitivity improved in Nishihira 2009 alongside the body composition changes — multi-target metabolic effect.

4

Cortisol reduction (HPA axis modulation)

Sakurai 2010 — cortisol reduction via HPA axis modulation. Stress-reduction mechanism complementing the metabolic effects.

5

NO production via PKC-dependent NADPH oxidase activation

Kitadate 2014 — nitric oxide production via PKC-dependent NADPH oxidase activation pathway. Vasodilation mechanism for the peripheral circulation effect.

6

Visceral adipocyte ROS reduction

Visceral adipocyte reactive oxygen species reduction contributes to adipose tissue normalization and adiponectin restoration.

7

Anti-inflammatory cytokine modulation (IL-1β, IL-6)

IL-1β and IL-6 reduction (Sakurai 2010) — anti-inflammatory cytokine modulation supporting both metabolic and stress-related effects.

Clinical trials

1
Nishihira 2009 — Oligonol® Visceral Fat 10-Week RCT (PIVOTAL)

Nishihira 2009 (J Funct Foods 1(4):341-348). Pivotal visceral fat 10-week RCT (n=18) at 200 mg/day. Significant body weight, abdominal circumference, and visceral fat volume decreases (15% visceral fat reduction; 6% subcutaneous fat reduction; ~3 cm waist reduction). Insulin resistance improved with adiponectin elevation. Hokkaido Information University, Sapporo Bio-S, and Amino Up Chemical Company collaboration.

2
Sakurai 2010 — Oligonol® Cortisol/Inflammation in Healthy Men

Sakurai 2010 (Nutr Res Pract 4(3):203-207). First human trial confirming anti-inflammatory role through cortisol, IL-1β, and IL-6 inhibition in healthy young men.

3
Kitadate 2014 — Oligonol® Peripheral Circulation Pilot

Kitadate 2014 (Natural Medicine Journal 6(7)). Peripheral circulation pilot using infrared thermography. 50 mg Oligonol® improved blood circulation via NO production.

Side effects and drug interactions

Common Potential side effects

Generally extremely well-tolerated — derived from food sources (lychee, green tea).
GI upset (rare).
Allergic reactions in lychee-allergic individuals (rare).
Pregnancy/lactation: limited specific data; food-grade origin supports general safety at typical doses.
Long-term safety: extensive lychee + green tea food consumption + 30+ clinical trials supportive.
Caffeine content negligible despite 15% green tea component (low extraction).
Gluten-free, dairy-free, pesticide-free per manufacturer specifications.

Important Drug interactions

Anticoagulants (warfarin, DOACs): theoretical mild antiplatelet effect — monitor.
Antihypertensives: theoretical mild additive effects via NO/circulation mechanism.
Diabetes medications: theoretical compatible/synergistic glucose effects (improved insulin sensitivity); monitor blood glucose.
Statins: compatible.
Most medications: well-tolerated combination profile.
Iron supplements: separate by 2 hours (polyphenol-mineral chelation).

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Frequently asked questions about Oligonol® (Lychee + Green Tea Polyphenol — Amino Up)

What is Oligonol® (Lychee + Green Tea Polyphenol — Amino Up)?

Oligonol® is a branded low-molecular-weight polyphenol product from Amino Up Chemical Company (Japan), combining 85% lychee fruit (Litchi chinensis) and 15% green tea (Camellia sinensis).

What does Oligonol® (Lychee + Green Tea Polyphenol — Amino Up) do?

The proprietary depolymerization process converts high-MW lychee polyphenols (poorly absorbed in typical lychee extracts) into low-MW oligomers that are much better absorbed. The distinguishing pharmacokinetic advantage of Oligonol vs generic lychee polyphenol products. In clinical research, Oligonol® (Lychee + Green Tea Polyphenol — Amino Up) has been studied for visceral fat reduction (10-week trial), cortisol and inflammatory cytokine reduction, peripheral circulation improvement.

Who should take Oligonol® (Lychee + Green Tea Polyphenol — Amino Up)?

Oligonol® (Lychee + Green Tea Polyphenol — Amino Up) may be most relevant for people interested in weight management, metabolic health, antioxidant. It has been clinically studied for visceral fat reduction (10-week trial), cortisol and inflammatory cytokine reduction, peripheral circulation improvement. As with any supplement, consult your healthcare provider before starting, especially if you have medical conditions or take prescription medications.

How long does Oligonol® (Lychee + Green Tea Polyphenol — Amino Up) take to work?

Most clinical trial effects appear over weeks of consistent use; individual response varies. Acute or same-day effects (where applicable) typically appear within hours, but most cumulative benefits — particularly those affecting biomarkers, mood, sleep quality, or chronic symptoms — require 4-12 weeks of regular use to fully assess. If you don't notice benefit after 12 weeks at the appropriate dose, it may not be your responder.

When is the best time to take Oligonol® (Lychee + Green Tea Polyphenol — Amino Up)?

Oligonol® (Lychee + Green Tea Polyphenol — Amino Up) can typically be taken with breakfast or dinner — taking with food reduces GI sensitivity for most supplements. Specific timing matters less than daily consistency for cumulative effects. Always check product labeling and follow personalized guidance from your healthcare provider.

Is Oligonol® (Lychee + Green Tea Polyphenol — Amino Up) worth taking?

Oligonol® (Lychee + Green Tea Polyphenol — Amino Up) has moderate clinical evidence (Evidence Level 3/5 on NutraSmarts) — meaningful trial support exists, though results are less consistent than top-tier ingredients. Whether it's worth taking depends on your specific goals, what you've already tried, your budget, and your overall supplement strategy. The honest framing: no supplement is essential for most people, and lifestyle factors (sleep, exercise, diet, stress management) typically produce larger effects than any single supplement. Oligonol® (Lychee + Green Tea Polyphenol — Amino Up) is most worth trying if its evidence-supported uses align with your specific goals.

What is the recommended dosage of Oligonol® (Lychee + Green Tea Polyphenol — Amino Up)?

The clinically studied dose for Oligonol® (Lychee + Green Tea Polyphenol — Amino Up) is Visceral fat protocol: 200 mg/day Oligonol® (50 mg twice daily) for 10 weeks. Peripheral circulation effects shown at 50 mg single dose. Standard daily range: 100-200 mg/day. Take with or without food.. Always follow product labeling and consult a healthcare provider for personalized dosing recommendations.

What is Oligonol® (Lychee + Green Tea Polyphenol — Amino Up) used for?

Oligonol® (Lychee + Green Tea Polyphenol — Amino Up) is studied for visceral fat reduction (10-week trial), cortisol and inflammatory cytokine reduction, peripheral circulation improvement. A 10-week randomized trial in 18 adults at 200 mg/day showed significant decreases in body weight, abdominal circumference, and visceral fat volume — roughly 15% visceral fat reduction, 6% subcutaneous fat reduction, and ~3 cm waist reduction.