GLPro Core by Jung Kwan Jang
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Ships from Singapore · 1–3 working days

Korean red ginseng, in a shot you'll actually keep drinking.

GLPro™ Core is a once-daily 25 ml formula from Jung Kwan Jang — the world's No.1 red ginseng brand — built on 6-year Korean red ginseng with banaba leaf and bitter melon. Suitable for people concerned about blood sugar.

1bottle a day
23mgginsenoside
Rg1+Rb1+Rg3
0.3gsugar per bottle
See the 12-week programme →

4 boxes S$520 S$468 · free delivery

A woman in her fifties holding a GLPro Core bottle at her kitchen counter
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Singaporean woman, 50s, holding the bottle at her kitchen counter, warm morning light
GLPro Core box containing 21 bottles
IMAGE 09
product-box.png
Since 1899Korean red ginseng heritage
6-Year RootGrown to full maturity
Made in KoreaGMP · HACCP · ISO 9001
Tyler Award 2025American Botanical Council

Why people start

The 2pm slump isn't your fault. It's your lunch.

Kopi with condensed milk. Char kway teow. A bowl of rice, then another. Singapore eats brilliantly and constantly — and most of us feel it about ninety minutes later, face-down in a spreadsheet.

A man at his desk rubbing his eyes in the early afternoon
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Man, 45–55, at his desk mid-afternoon, rubbing his eyes
2:15pmEverything after lunch feels like wading. You blame the aircon, the meeting, the night before.
Friends sharing a large lunch at a hawker centre
IMAGE 03 — problem-2-sg.jpg (1:1)
Colleagues sharing a big hawker-centre lunch, rice and noodles on the table
Every single dayNot an occasional indulgence. Just how we eat — and nobody is realistically giving up rice.
A woman looking at a shelf of half-finished supplement bottles
IMAGE 04 — problem-3-sg.jpg (1:1)
Woman at an open kitchen cupboard, half-finished supplement bottles pushed to the back
Week threeThe resolution lasts about eleven days. Then the bottle moves to the back of the cupboard, behind the coffee jar.

Most people respond to that by resolving to fix everything at once. Fewer carbs, more steps, earlier nights.

GLPro™ Core is the opposite of that. One 25 ml bottle, once a day, after a meal. It takes four seconds. It doesn't ask you to give up anything. It's the smallest possible thing you can add to a routine you already have — which is exactly why people are still doing it in month three.

Hands twisting open a small GLPro Core bottle beside a finished lunch
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Close crop of hands opening the small bottle beside a finished lunch plate

Four seconds

Small enough that you don't have to remember it.

A 25 ml bottle is about the size of your thumb. Shake it, drink it, put it down. There's no measuring, no mixing, no waiting for it to dissolve, and nothing to wash up.

That sounds like a trivial detail. It's the entire reason people finish the box — and finishing the box is the only thing that matters.

  • Light and fruity. Not the bitter ginseng paste in your relatives' fridge.
  • 0.3 g sugar, 6 calories. Allulose and stevia, not syrup.
  • No caffeine. It won't keep you up.

What's inside

Three botanicals. One does the heavy lifting.

No proprietary blends, no list of twenty ingredients at trace doses.

Six-year Korean red ginseng roots
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Six-year Korean red ginseng roots, dark premium still life
Main ingredient

6-Year Korean Red Ginseng
(KGC05pg)

Jung Kwan Jang's own standardised red ginseng extract, developed in-house and recognised by Korea's Ministry of Food and Drug Safety as an individually-approved functional ingredient in 2024.

Ginseng reaches full maturity in its sixth year — that's when the root has its most complete structure and its richest concentration of active ginsenosides. GLPro Core uses only fully matured 6-year roots.

Ginsenoside Rg1 + Rb1 + Rg3 — 23 mg per bottle
Supporting

Banaba Leaf

Lagerstroemia speciosa, long used across Southeast Asia and the Philippines. Its studied constituent is corosolic acid.

Standardised extract
Supporting

Bitter Melon

Momordica charantia — the bitter gourd your grandmother already believed in, here as a concentrated extract rather than a plate of it.

Concentrated extract

Who makes it

A 127-year-old ginseng company that behaves like a research lab.

Jung Kwan Jang

The flagship brand of Korea Ginseng Corporation, with heritage tracing to 1899. Euromonitor has ranked it the world's No.1 ginseng brand for 12 consecutive years, with a 44.3% global share.

290

Published research

KGC has published over 290 scholarly articles internationally, holds 200 technical patents, and developed 15 of its own ginseng varieties with registered plant variety rights.

Tyler Award, 2025

In March 2025 the American Botanical Council presented KGC with its Varro E. Tyler Award, recognising sustained commercial investment in phytomedicinal research. An independent, US-based honour — not an industry self-award.

On the research behind the ingredient

The KGC05pg red ginseng extract was evaluated in a 12-week randomised, double-blind, placebo-controlled study of 98 adults, published in the peer-reviewed journal Medicine in 2024 (Jeong et al., 103(52):e41130). The study reported no treatment-emergent adverse events and no serious adverse events in either group.

We describe the study's design and safety findings only. The research was conducted and funded by the manufacturer, results in a single study do not guarantee any individual outcome, and this product is not intended to diagnose, treat, cure or prevent any disease.

How it works in real life

Four seconds a day. That's the whole protocol.

Shake it

Give the bottle a shake before opening. Natural plant sediment is normal and expected.

Drink it after a meal

One 25 ml bottle a day, after eating. Many people pair it with lunch so it becomes automatic. Finish the bottle once opened.

Keep going for 12 weeks

The published study ran 12 weeks. That's the honest timeframe, and it's why we lead with the four-box programme rather than a single box.

Each box holds 21 bottles — a three-week supply. Four boxes covers the full 12 weeks.

A lot of our orders

Are bought by someone's daughter.

He won't change how he eats. You've tried. Everyone's tried. There's a version of this conversation that happens at every family dinner and it never goes anywhere.

But he'll drink one small bottle after lunch — because it takes four seconds, it doesn't taste like medicine, and it doesn't require him to admit anything.

Sometimes doing one small thing is the whole point.

See the programmes →
An adult daughter and her father sitting together after a meal at home
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Adult daughter (30s) and father (65+) at the dining table after a meal, relaxed and warm

Choose your programme

Most people start with 12 weeks.

Not because it's the bigger box, but because it's the length the research actually ran. Three weeks tells you whether you like the taste. Twelve weeks is the commitment the product was designed around.

Starter

1 box · 21 bottles · 3 weeks
S$130
S$130.00 per box
Try one box
Save S$12

Six weeks

2 boxes · 42 bottles
S$260S$248
S$124.00 per box · free delivery
Choose 2 boxes
The 12-week programme Save S$52 · 10% off

Full Programme

4 boxes · 84 bottles · 12 weeks
S$520S$468
S$117.00 per box · free delivery
Start the 12 weeks
Save S$152 · 15% off

Six months

8 boxes · 168 bottles
S$1,040S$888
S$111.00 per box · free delivery
Choose 8 boxes

Prices in Singapore dollars, inclusive of GST. Struck-through prices are the single-box price multiplied by quantity. Sealed boxes can be returned within 14 days.
Questions before you order? Message us on WhatsApp.

From our customers

What people say about actually keeping it up

★★★★★

[REPLACE WITH A REAL REVIEW — about taste, routine or convenience. Not about health outcomes.]

JL
Verified customer, Singapore
★★★★★

[REPLACE WITH A REAL REVIEW]

SC
Verified customer, Singapore
★★★★★

[REPLACE WITH A REAL REVIEW]

MT
Verified customer, Singapore

Before you order

Who should speak to a doctor first

We would rather lose the sale than have you take something you shouldn't. Please check with your doctor before using GLPro™ Core if any of these apply:

Please consult your doctor if you

  • take medication for blood sugar
  • take anticoagulants or blood thinners such as warfarin
  • are pregnant, trying to conceive, or breastfeeding
  • have an autoimmune condition, or G6PD deficiency
  • have surgery scheduled in the next two weeks

Not for children. Do not use if you are allergic to any listed ingredient. Stop taking it and seek medical advice if you feel unwell. Never stop or change prescribed medication — this is a health supplement, not a medicine, and it does not replace medical care.

Questions

The things people ask us

What does it taste like?

Light and fruity, not the heavy bitter ginseng tonic you may be bracing for. It's sweetened with allulose and stevia rather than syrup, which is how it stays at 0.3 g of sugar and six calories. Most people drink it straight from the bottle in one go. This matters more than it sounds — a supplement you dread drinking is one you stop drinking in week two.

When should I drink it?

One bottle a day, after a meal. Shake before opening and finish it once opened. The specific time of day matters less than doing it at the same time every day — pick a meal you never skip and attach it to that.

How long before I should expect anything?

The published study ran for 12 weeks, and that's the timeframe we'd point you to. We'd rather tell you that upfront than sell you one box on the suggestion that three weeks will do something. If you want to try a single box first to see whether the taste and routine suit you, that's a perfectly sensible way to start.

Can I take it with my medication?

Please ask your doctor or pharmacist first, particularly if you take medication for blood sugar or any anticoagulant. Red ginseng and bitter melon can both interact with those. Bring the box or this page to your appointment — the full ingredient list is on the carton. And whatever you do, don't stop or reduce a prescribed medication.

Is it safe? What are the side effects?

In the 12-week study of 98 adults, no treatment-emergent adverse events and no serious adverse events were reported in either group. That said, no supplement is right for everyone — the most commonly reported effect with ginseng generally is difficulty sleeping, which is one reason we suggest taking it during the day. If you feel unwell after taking it, stop and see a doctor.

Is this the same as the injections everyone's talking about?

No, and we won't pretend otherwise. Those are prescription medicines that act directly on a receptor, prescribed and monitored by a doctor. GLPro™ Core is a health supplement made from red ginseng and two botanicals. Different category, different regulation, different thing entirely. If you need a medicine, you need a doctor.

Is it registered in Singapore?

Health supplements in Singapore are not subject to pre-market approval or licensing by the Health Sciences Authority. Sellers are responsible for ensuring their products are safe and comply with HSA's requirements. GLPro™ Core is manufactured in Korea by Korea Ginseng Corporation under GMP, HACCP and ISO 9001 standards.

How fast is delivery, and can I return it?

Orders ship from Singapore and typically arrive in one to three working days. Delivery is free on two boxes or more. Sealed, unopened boxes can be returned within 14 days of delivery for a refund. If a box arrives damaged, message us on WhatsApp with a photo and we'll replace it.

Is it halal?

Please contact us before ordering if halal certification is a requirement for you — we'd rather confirm the current certification status for your specific batch than give you a general answer.

Twelve weeks. One small bottle a day.

Korean red ginseng from a company that has been studying it since 1899 — in the smallest, easiest format they've ever put it in.

Start the 12-week programme →

4 boxes S$520 S$468 · free delivery · 14-day returns on sealed boxes

S$520S$468 / 12 weeks 4 boxes · free delivery
Order now