T‑cell Activator® · 90-day program

Over 50. Check-up says fine. Still tired by 3pm.

★★★★★1M+ tried & tested across Asia · backed by 25 years of research

Your blood test measures cholesterol, glucose and organ function. It doesn't measure the part of your immune system that shapes how you age. By 50, T-cell function has been quietly declining for years. Most people feel it first as fatigue.

Start your 90-day programQuestion first? Ask Summer
Made in Singapore30-day money-back guarantee3rd party testedFree local delivery
$20M Invested in R&D
20+ Clinical studies
25 yrs Of research
5 Invention patents
<1% Of supplements match this proof
The missing link

What a standard check-up looks for, and what it misses

A standard panel is built to catch disease. It doesn't check T-cell health or tell you anything about immune aging.

  • Tired, even after a full night's sleep
  • Energy that fades by 3 pm.
  • A gut that is more sensitive than it used to be
  • Skin that flares up more often
  • Easily run down and slow to bounce back

The part of you that is changing never shows up on the report. Yet you may still notice a general sense that something is off.

Most people fix each one on its own. Something for energy. Something for sleep. Something for the gut. But when you only treat what you feel, you miss the system underneath.

T-cells and Immune aging

The cells that lead your immune response

T-cells are a type of white blood cell. They find and clear infected cells. They also tell the rest of your immune system when to act and when to stand down.

Our body’s T-cell production declines significantly with age, due to thymic involution - the gradual shrinking of the thymus. By age 50, T-cell output drops by about 75% compared to when we were 20. And by age 70, this decline can reach a staggering 95%.

You can't stop the thymus from shrinking. You can support the T-cells you have.

Start supporting my T-cells
T-CELL (CD4) PRODUCTION 20 30 40 50 60 70 80 AGE RISK OF CANCER AND DISEASES
The science, in the open

Recent research links healthy T-cells to healthy longevity

nature communications

Immune resilience despite inflammatory stress promotes longevity

A large-scale study of over 48,000 people found that the balance between CD4+ and CD8+ T-cells, key markers of immune resilience, is strongly linked to longevity.

nature

Functional T cells are capable of supernumerary cell division and longevity

Researchers found that healthy T-cells can keep dividing well beyond the normal lifespan of the organism.

PNAS

Single-cell transcriptomics reveals expansion of cytotoxic CD4 T cells in supercentenarians

People who live past 110 were found to have an unusually high share of a rare T-cell type, cytotoxic CD4 T-cells. They made up about a quarter of their T-cells, compared with a few percent in younger adults.

Real customer stories

Hear it from the people who take it

Vitality all day

At 71, Mr. Chan volunteers with a senior tennis team. Over the years, he started to feel the strain in his body.

After 90 days on T-cell Activator®, he was waking up refreshed and lasting through the day.

Industry leader

Mr. Lim is President of the Singapore Chinese Medicines and Health Products Merchant Association. He takes T-cell Activator® to support his immune health and stay active as he ages.

STRONGER & ACTIVE

At 60, Simon was catching a bug almost every month. After three months, he went weeks without one.

BACK TO RUNNING

Daniel manages 700 to 800 staff across China, Singapore and Malaysia. The travel and stress left him with severe bloating, and he couldn't jog at all. 

Soon after starting, the bloating was gone. Now he sleeps a full eight hours and runs 4 to 5 km.

Energy to stay active

Adrian regain his energy to stay active throughout the day. He also loves attending the quarterly events that came with his membership.

Meet T-cell Activator®

Support your T-cells where most of your immune system lives

T-cell Activator® is made from one ingredient: GPComplex®, a patented extract of Chinese licorice root. About 70% of your immune cells live in the gut. GPComplex® works there in two ways:

70% IN THE GUT
of immune cells live in the gut-associated lymphoid tissue.
GPComplex® bioactive polysaccharide
Directly

Activates receptors on immune cells in GALT, triggering T-cell activation.

Indirectly

Acts like a prebiotic, feeding good gut microbes to strengthen the gut barrier.

From our community

Join thousands who are rebuilding their resilience & vitality with T-cell Activator®

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T-cell Activator® 90-Day Supply
T‑cell Activator® · 90-day program
Choose how you want it
Free shipping in Singapore30-day money-back guarantee
  • Clinically Validated
  • 100% Natural
  • Patented Tech
  • GMP Facility
  • 3rd-Party Tested
  • Made in Singapore
Backed by human trials

Proven in a Phase II clinical trial

Randomized, double-blind, placebo-controlled, multi-center trial. 240 subjects. The kind of evidence your GP would recognize.

See our clinical studiesSee our Singapore patent
+55.1%
Growth in helper T-cell count
+53.9%
Helper & killer T-cell ratio
+35.9%
Growth in overall T-cell count
Expert authority

Developed and reviewed by leading scientists

Dr. Jeremy LimDr. Jeremy Lim
Gut microbiome · AMILI

Leads AMILI, SE Asia's first gut microbiome company. NUS adjunct faculty; advises the WHO and World Bank.

Prof. Bian Yu HongProf. Bian Yu Hong
Integrative medicine · Cell biology

Dean of Integrated Chinese & Western Medicine, Tianjin University. 100+ papers; UK patent holder.

Dr. Weili XuDr. Weili Xu
Immunology · Ex-A*STAR

PhD in Immunology (A*STAR-SIgN x NTU). Research on T cells and immune aging; 1,500+ citations.

The comparison

Not all immune support is created equal

T‑cell Activator®Vitamin / mineral supplementsHerbal blends / extracts
Patented active ingredient Yes No No
Supported by multiple human studies Yes No No
Research-derived potency Yes Unknown No
100% natural, plant-derived Yes No Unknown
No synthetic fillers or preservatives Yes No No
Made in a GMP-certified facility Yes Unknown Unknown
Supplement facts
What's inside

Everything your immune system needs. Nothing else.

GPComplex® bioactive polysaccharide+
Glycyrrhizin removed to trace levels+
Can be taken with other supplements or medications.+
100% natural / plant-basedNo synthetic fillersNo preservativesThird-party lab tested
T-cell Activator® 90-Day Supply
T‑cell Activator® · 90-day program

90 days to feel the difference, from $4.75 a day

A daily dose of just 2 capsules provides advanced support for healthy immune response and T-cell function. A 90-day supply gives your body time to respond while giving you time to build consistent immune support into your daily routine. Because this isn’t a quick fix. It’s a long-term investment in how you age.

One-time purchase
90-day supply · 3 bottles · $5.00/day
$450.00$720.00
Subscribe quarterly & save
Billed every 3 months · cancel anytime
Best value
180 Capsules
2 capsules · $4.75/day
360 Capsules
4 capsules · $9.33/day
$450.00 $720.00 SGD · Save $270.00
30-day money-back guarantee Free shipping within Singapore

T-cell Activator® is clinically studied to support healthy immune regulation, including T-cell function and a balanced inflammatory response. Formulated in Singapore from a single, rigorously researched active ingredient.

Take one serving first thing in the morning or last thing before bed, whichever fits your routine and is easiest to stick to. Clinical studies were conducted on an empty stomach, though timing matters far less than consistency. The results come from showing up daily.

Our active ingredient is a bioactive polysaccharide extracted from Chinese Licorice Root through a patented process — a natural carbohydrate in the same family as plant fibers and prebiotics.

It works primarily through the gut, which is where much of your immune system lives. It's safe to take alongside other supplements or medications.

The immune system is complex, and everyone's starting point is different.

Weeks 1–2: Adjustment
Your body begins responding to the active ingredient.

Months 1–3: Early Shifts
Many customers notice improved digestion, steadier energy, reduced fatigue.

Month 3+: Systemic Change
With consistent daily use, deeper immune support begins to take hold.

Month 6–12: Resilience & Vitality
Customers who stay consistent report greater immune resilience and overall vitality.

  • Clinically Validated
  • 100% Natural
  • Patented Tech
  • GMP Facility
  • 3rd-Party Tested
  • Made in Singapore
T-cell Activator® 90-Day Supply
T‑cell Activator® · One-time
$450.00$720.00SGD

Customer Reviews

Overall rating: 5.0 / 5 from 10 reviews.

I find that my immune system seemed to have improved as I hardly fall sick when there are people around me falling sick. I'm hoping my energy level can also improve with long term use..

E.m. L. 5/5 Verified

T-CELL ACTIVATOR™ 90 DAY SUPPLY

I’ve been using Zaccha’s T-cell activator for a while and found that it helps to alleviate my acid reflux problem. So, I’ve been ordering more of the supplement in the hope that it will completely do away with my needs for gastric medication. The business support is excellent and prompt. Ms Summer, who’s the co-founder, is also warm and passionate with her advice. I am looking forward to even better results from the regular usage.

Daniel P. 5/5 Verified

T-CELL ACTIVATOR™ 90 DAY SUPPLY

Have been taking T-CELL for about 3 months now and generally I'm feeling better like waking up energised and aching knees less painful. Attended a Preventive Health Talk given by Dr Jeremy Lim and Co-founder Summer Song to understand better about T-Cell which is informative and beneficial. I believe it's not a magic pill but I'm willing to give a try as our immune system is the core to our health.

Bobby T. 5/5 Verified

T-CELL ACTIVATOR™ 90 DAY SUPPLY

Wake up every morning consistently early and felt refreshed since taking T-Cell Activator. Go to bed early unlike before taking the activator, thence to sleep late previously.

John L. 5/5 Verified

T-CELL ACTIVATOR™ 90 DAY SUPPLY

I started taking 2 tablets each day for three weeks. I am more energetic and don't need an afternoon nap after taking. I noticed my constant itchiness gone (I am prediabetic). I bought your package for 180 days but am sharing with my brother who has recently gone for radiation due to prostate cancer. He also felt more energized and his recent medical report reveals that he is healing well.

Angela 5/5 Verified

T-CELL ACTIVATOR™ 90 DAY SUPPLY

Great experience! Feeling much better, alert and energy wise. Yes, would like your best offer on the 3 months package.

K.w. T. 5/5 Verified

T-CELL ACTIVATOR™ 90 DAY SUPPLY

I just finished a bottle. Yes, my energy levels are like back to normal without feeling tired after a lunch break. And lasted for a full day. Now onto the 2nd bottle, and will keep monitoring myself. Thanks, Lionel Teo

Lionel T. 5/5 Verified

T-CELL ACTIVATOR™ 90 DAY SUPPLY

The T-cell activator is working out pretty well for me. Energy level is also improved and so is my stamina. I am now in Sichuan and just did the hiking trip. I managed it pretty well without the need for oxygen supplement which I saw many people needed. Sleep quality is consistently good and the mandatory afternoon naps are no longer a necessity. Glad I decided to try out the product. Will be reordering when I return from my trip next week.

C.s. L. 5/5 Verified

T-CELL ACTIVATOR™ 90 DAY SUPPLY

I almost finished a bottle. I feel I am more energised, I don't feel the fatigue. Now I sleep very well through the night.

Melvin Y. 5/5 Verified

T-CELL ACTIVATOR™ 90 DAY SUPPLY

Risk-free

Not satisfied within 30 days.
Full refund.

Request a refund within 30 days of your first order. Terms and conditions apply.

FAQ

Got questions? We have answers.

There are no known interactions with over-the-counter or prescription medication. If you manage a complex condition, WhatsApp us with the details before you start.

It comes in capsule form. For general immune support, take 2 capsules per day.

Felt benefits like easier digestion and more energy are often the most obvious. Longer-term immune benefits usually take around 2 to 3 months.

It's made from a 100% natural plant extract with no reported side effects and no synthetic chemicals, additives or fillers.

Yes. It can be taken consistently on a long-term basis. Clinical research and its long history of use suggest a good safety profile.

Don't let immune aging hold you back

Your check-up measures one thing. Your energy tells you another.

Give it 90 days. If it isn't for you, the first 30 are covered.

Start your 90-day program