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Does Jung Kwan Jang GL Pro Core have side effects? Is red ginseng heaty, and who should ask a doctor (2026 update)

Reviewed by Health Advisor Team

Short answer: Jung Kwan Jang GL Pro Core is a Korean red ginseng drink, not a medicine. Most people find red ginseng gentle, and you may notice a gentle warmth when you first start. The label shows 0 g sugars and 5 kcal a bottle. According to the brand, it has no animal-derived ingredients, is non-GMO, and is free from gluten, dairy, soy, eggs, fish, shellfish and peanuts. It's for adults aged 18 and over only. If you're pregnant or breastfeeding, on blood-sugar medicine or blood thinners, or have a kidney condition, ask your doctor before you start.

How is it made, and what does the label say?

Item	Details
Production	Korea Ginseng Corp., to GMP, HACCP and ISO standards, traceable from farm to finished bottle
Origin	Made in Daejeon, Korea
Sugar and energy	0 g sugars, 5 kcal a bottle (nutrition label)
Animal ingredients	None, and non-GMO, according to the brand
Common allergens	Free from gluten, dairy, soy, eggs, fish, shellfish and peanuts, according to the brand
Halal	Our current sources show no Halal certification; if you need Halal, ask your advisor first or check the pack

What might you notice?

A gentle warmth: red ginseng is fresh ginseng that has been steamed, then dried, and Jung Kwan Jang describes it as warming, not heaty. You may notice a gentle warmth when you first start.
Sediment at the bottom: red ginseng drinks can have a little harmless sediment. Just shake before you drink.
Allergies: read the ingredient list first. If you're allergic to any ingredient, don't drink it.

If you feel unwell in any way, stop straight away and ask your doctor.

Who should ask a doctor first?

Pregnant or breastfeeding: ask your doctor first.
On blood-sugar medicine: ask your doctor first. Never stop your medicine on your own.
On blood thinners: ask your doctor first.
A kidney condition: ask your doctor first.
On medication or managing a long-term condition: ask your doctor or pharmacist first.
Under 18: not suitable. Keep out of reach of children.

How is it different from blood-sugar medicine?

Blood-sugar medicine is prescribed by your doctor for your condition. GL Pro Core is a red ginseng drink you take after a meal. It works on the blood sugar swing after each meal and the afternoon slump, and it does not replace medicine your doctor prescribes.

If you already take blood-sugar medicine, ask your doctor before you start, and never stop your medicine on your own.

Frequently asked questions

Will red ginseng make me feel heaty?

Most people find it gentle. Jung Kwan Jang describes red ginseng as warming, not heaty. You may notice a gentle warmth when you first start.

Can it replace my blood-sugar medicine?

No. GL Pro Core is not a medicine and does not replace prescribed medication. If you take medicine, ask your doctor before drinking it, and never stop your medicine on your own.

Does it contain animal ingredients? Is it Halal?

According to the brand, it has no animal-derived ingredients and is non-GMO. Our current sources show no Halal certification. If you need Halal, ask your advisor first or check the pack.

I have food allergies. Can I drink it?

According to the brand, it is free from gluten, dairy, soy, eggs, fish, shellfish and peanuts. Read the ingredient list first. Don't drink it if you're allergic to any ingredient, and stop if any reaction occurs.

Can pregnant women or children drink it?

If you're pregnant or breastfeeding, ask your doctor first. It's for adults aged 18 and over only.

Buy or learn more

See the full ingredients and label details on the GL Pro Core product page. For how to take it, read how to take GL Pro Core.

Jung Kwan Jang GL Pro Core Red Ginseng Shot

S$130

From S$123 / box

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