Tegreen 97® (120 Capsules) (Singapore)

Tegreen 97 is one of the most concentrated green tea catechin extracts commercially available — each capsule delivers 250mg of catechins standardised to 97% polyphenols, with a significant proportion as EGCG (epigallocatechin gallate), the catechin most studied for antioxidant and metabolic effects. That 250mg per capsule is roughly equivalent to the catechin content of 7 cups of brewed green tea, but with 99.5% of the caffeine removed. At S$895 for 120 capsules, this is a premium investment at approximately S$7.46 per day — considerably more than the GNC or Blackmores alternatives sitting on Guardian shelves. The concentration level is the difference: you'd need to take 3–4 capsules of most competing products to match a single Tegreen 97 capsule's catechin content. For Singaporeans already familiar with green tea's benefits through Chinese and Japanese tea culture, Tegreen 97 delivers the active compounds without the impracticality of drinking 7 cups daily — and without the caffeine that would keep you up past midnight.

What Makes Tegreen 97 Different

The "97" in the name refers to the 97% polyphenol concentration — most green tea extract supplements on the market are standardised to 50–60% polyphenols at best. That's a substantial gap. When you look at a product like GNC's Green Tea Extract at S$30–40, you're typically getting 250–400mg of green tea extract per capsule, but only 50% of that is polyphenols, and the EGCG fraction is lower still. Tegreen 97's extraction and concentration process retains the full catechin profile at 97% purity while removing virtually all caffeine — the 0.5% caffeine residue amounts to less than 2mg per capsule, compared to 30–50mg in a typical cup of green tea.

The decaffeination matters more than it might seem. Green tea's health benefits come primarily from catechins, not caffeine. But most "green tea for health" advice assumes you'll drink multiple cups daily — which means 150–350mg of caffeine, enough to disrupt sleep, increase anxiety, and cause digestive issues in sensitive individuals. Tegreen 97 separates the beneficial catechins from the caffeine, giving you the active compounds without the stimulant effects. For Singaporeans who already drink kopi or teh throughout the day, adding 7 cups of green tea on top would push caffeine intake well beyond recommended levels.

Nu Skin has published research on Tegreen 97's bioavailability and antioxidant effects. A study conducted by Pharmanex researchers and published in the Journal of Medicinal Food demonstrated measurable increases in plasma antioxidant capacity following Tegreen 97 supplementation. The catechins were detectable in blood samples, confirming that the concentrated extract form is absorbed and biologically active — not just passing through unabsorbed, which is a legitimate concern with some supplement forms.

Key Ingredients

EGCG (Epigallocatechin Gallate) — The most studied catechin in green tea, EGCG has been the subject of over 6,000 published studies indexed in PubMed. Its mechanisms include inhibiting catechol-O-methyltransferase (COMT), an enzyme involved in fat metabolism, and activating AMPK (AMP-activated protein kinase), which plays a role in cellular energy regulation. A 2009 meta-analysis in the International Journal of Obesity reviewing 11 studies found that green tea catechins with caffeine increased energy expenditure by approximately 4.7% — though this effect was more pronounced in Asian populations than Caucasian ones, which is relevant for Singapore's predominantly Asian demographic.

Full Catechin Profile (ECG, EGC, EC) — Tegreen 97 retains the complete spectrum of green tea catechins, not just EGCG. Epicatechin (EC), for instance, has been studied for cardiovascular benefits — a 2012 paper in the British Journal of Clinical Pharmacology reported that epicatechin improved endothelial function and nitric oxide availability. Epigallocatechin (EGC) contributes additional antioxidant capacity. The full-spectrum approach means the catechins can work synergistically rather than relying on a single isolated compound.

Polyphenol Matrix at 97% Concentration — The 97% polyphenol standardisation ensures batch-to-batch consistency. Each capsule is tested using HPLC (high-performance liquid chromatography) to verify catechin content. This level of quality control is not standard across the supplement industry — many green tea extracts vary significantly between batches. The pharmaceutical-grade standardisation is part of what drives the price point, but it also means you know exactly what you're getting with each capsule.

How to Use

Take 1–2 capsules daily, preferably between meals. EGCG absorption is actually better on an empty stomach — a study in the European Journal of Clinical Pharmacology found that food reduced EGCG bioavailability by approximately 40%. Mid-morning (between breakfast and lunch) or mid-afternoon are ideal timing windows. If you experience any stomach sensitivity, take with a small amount of food — a few biscuits or crackers are sufficient. Start with 1 capsule daily for the first week and increase to 2 if well tolerated. In Singapore's climate, store the bottle in an air-conditioned room or refrigerator — catechins are sensitive to heat and humidity, and ambient temperatures regularly exceeding 30°C with 80%+ relative humidity can degrade polyphenol potency over time.

How It Compares

Feature	Tegreen 97	Eu Yan Sang Green Tea Extract	GNC Green Tea Extract	Blackmores Super Strength Green Tea
Price (SG)	S$895 (120 caps)	S$40–55	S$30–40	S$35–45
Polyphenol concentration	97%	~50–60%	~50%	~55–60%
Catechins per capsule	250mg	~100–150mg	~125–200mg	~150mg
EGCG standardised	Yes (primary catechin)	Varies	Yes	Yes
Caffeine content	0.5% (<2mg/capsule)	Not always specified	~5–10mg	Low caffeine
Capsules per day	1–2	1–2	1–2	1–2
Cost per day (at 2 caps)	~S$14.92	~S$1.50–2.00	~S$1.00–1.50	~S$1.20–1.50
Batch-tested (HPLC)	Yes	Not specified	Varies	Not specified
Available at Guardian/Watsons	No (online)	Eu Yan Sang stores	GNC stores	Yes

The price difference is stark, and we're not going to pretend otherwise. At S$895, Tegreen 97 costs roughly 7–10 times more than alternatives per bottle. The question is whether the 97% polyphenol concentration (versus ~50–60%), the near-zero caffeine content, and the HPLC batch testing justify that premium. If you're taking green tea extract primarily for general antioxidant support, the GNC or Blackmores options at S$30–45 deliver meaningful catechins at a fraction of the price. If you want the highest catechin concentration per capsule with pharmaceutical-grade standardisation and minimal caffeine — and you can afford the investment — Tegreen 97 is genuinely in a different class from what's available on mainstream shelves.

Who Is This For

Health-conscious professionals who value concentration over cost — If you're already investing in premium supplements and want the highest-potency green tea extract available, Tegreen 97 delivers substantially more catechins per capsule than anything at Guardian or Watsons. The 120-capsule bottle lasts 2–4 months depending on dosage, which somewhat offsets the sticker shock.

Singaporeans with high UV and oxidative stress exposure — Singapore receives UV index ratings of 9–12+ virtually every day of the year. Cumulative UV exposure generates free radicals and oxidative damage to skin cells and DNA. EGCG has been studied specifically for its photoprotective properties — a 2011 paper in the Archives of Biochemistry and Biophysics demonstrated that EGCG reduced UV-induced oxidative stress markers in skin cells. This isn't a sunscreen replacement, but it supports your body's internal antioxidant defences against constant tropical UV exposure.

Adults interested in metabolic support — The catechin-COMT interaction and AMPK activation pathways that EGCG influences are relevant for metabolic health. Research has shown a modest but measurable increase in thermogenesis and fat oxidation with regular catechin intake — the effect is moderate (roughly 80–100 extra calories per day in some studies), not dramatic, but it compounds over months.

Honest caveat: at S$7.46 per day (1 capsule) or S$14.92 per day (2 capsules), this is a significant financial commitment. If budget is a primary concern, a GNC or Blackmores green tea extract at S$30–45 per bottle will still provide meaningful catechins — just at lower concentration. Tegreen 97 also shouldn't be taken alongside high-dose iron supplements, as catechins can inhibit non-haem iron absorption by up to 25%.

Frequently Asked Questions

How is Tegreen 97 shipped in Singapore?
Tegreen 97 ships from the official Nu Skin Singapore warehouse. Standard delivery costs S$4.99 and takes 1–3 business days. Orders over S$99 qualify for free shipping — at S$895, this product always qualifies for free delivery.

Why is Tegreen 97 so much more expensive than other green tea supplements?
The 97% polyphenol concentration requires a proprietary extraction process that removes caffeine while retaining the full catechin spectrum at near-pharmaceutical purity. Lower-priced alternatives typically achieve 50–60% polyphenol concentration using simpler extraction methods. Each batch undergoes HPLC testing for catechin content verification. The concentration means you need fewer capsules to achieve a meaningful catechin dose — but we acknowledge the price point places it firmly in the premium supplement category.

Can I take Tegreen 97 if I'm sensitive to caffeine?
Yes. At 99.5% caffeine-free, each capsule contains less than 2mg of caffeine — compared to approximately 95mg in a cup of coffee or 30–50mg in a cup of green tea. Even at the 2-capsule daily dose, you're consuming less than 4mg of caffeine, which is negligible for virtually everyone including those with caffeine sensitivity.

Is it equivalent to drinking green tea? Can I just drink tea instead?
One Tegreen 97 capsule provides the catechin equivalent of approximately 7 cups of green tea. You could theoretically drink 7–14 cups of green tea daily for equivalent catechins, but you'd also consume 210–700mg of caffeine (depending on brew strength), significant tannins that can cause stomach irritation, and you'd need to account for the variability in catechin content between different tea batches, water temperatures, and steeping times. Tegreen 97 provides a standardised, caffeine-free alternative.

How long does one bottle last?
The 120-capsule bottle lasts 60 days at 2 capsules per day, or 120 days (4 months) at 1 capsule per day. At the 1-capsule-per-day maintenance dose, the daily cost is S$7.46.

Works With

LifePak — Tegreen 97 pairs well with LifePak's broad-spectrum vitamin and mineral coverage. The catechins in Tegreen 97 complement LifePak's antioxidant vitamins (C, E, selenium) through different mechanisms — catechins work primarily through enzyme activation and free radical scavenging, while LifePak's nutrients support the body's existing antioxidant systems.

Marine Omega — Omega-3 fatty acids and green tea catechins address oxidative stress through complementary pathways. EPA/DHA from Marine Omega support cellular membrane integrity, while EGCG from Tegreen 97 targets intracellular free radicals. A 2015 study in Nutrients found that combining omega-3s with polyphenols produced greater antioxidant effects than either alone.

ageLOC R² — R²'s focus on cellular energy (day) and detoxification (night) pairs logically with Tegreen 97's antioxidant protection. EGCG's activation of AMPK overlaps with R² Day's mitochondrial support pathway, while the catechins' effect on Phase II detoxification enzymes complements R² Night's Nrf2 activation approach.

Important Information

Important Information: This product is not intended to diagnose, treat, cure, or prevent any disease. Consult your healthcare professional before use, especially if you are pregnant, nursing, taking medication, or have a medical condition. Health supplements are regulated by the Health Sciences Authority (HSA) of Singapore. Individual results may vary. Store in a cool, dry place away from direct sunlight — this is especially important in Singapore's tropical climate.

NuBest Skin is an Independent Nu Skin Brand Affiliate. This content is not produced or endorsed by Nu Skin Enterprises Inc.

Sources & References

EGCG and catechin research referenced from the International Journal of Obesity (2009) meta-analysis of 11 green tea catechin studies. Epicatechin cardiovascular effects from the British Journal of Clinical Pharmacology (2012). EGCG bioavailability and food interaction data from the European Journal of Clinical Pharmacology. UV-related oxidative stress and EGCG photoprotection from the Archives of Biochemistry and Biophysics (2011). Catechin–iron absorption interaction data from published nutritional pharmacology research. Omega-3 and polyphenol synergy data from Nutrients (2015). Tegreen 97 product specifications, catechin concentration, and clinical data from official Nu Skin Pharmanex documentation, 2024–2025.

Reviewed by the NuBest Skin Editorial Team. Last updated: April 2026.