Quick answers
- What it is: a fibre drink from Zenso (Wellous) made with 3-year fermented Kurozu black vinegar, NUTRALLAX prune essence, black tea and NUTRIOSE soluble wheat fibre. 19 kcal and 3.8 g of fibre per sachet.
- How to take: 1 sachet in 200 ml of room-temperature water, or as a jelly, 30 minutes before a meal, ideally lunch and dinner.
- Side effects: it has no laxative substances, but more fibre can mean more frequent trips to the toilet, and some wind or bloating at first. Drink plenty of water.
- Halal: both flavours are Halal certified by JAKIM, valid until 15 September 2027.
- Weight loss: Kuro Kosen is not a meal replacement or a slimming medicine. It supports fullness and digestion; the results come from your diet, ideally a Zenso plan.
A note before you read: Wellness Signature is an authorised Wellous dealer and we sell Kuro Kosen. This review sticks to what is on the box, in the lab reports and in Wellous’s own materials, and says where a figure comes from.
What is Kuro Kosen?
Kuro Kosen is part of the Zenso weight management range from Wellous. The box calls it a mixed soluble wheat fibre with prune extract. Each 7 g sachet is a powder you mix with water, and every box has 30 sachets: 15 Prune and 15 White Peach.
What is inside:
- Kurozu: black rice vinegar fermented for 3 years, from a 200-year brewing tradition in Kyushu, Japan. It is the base of every Zenso product.
- NUTRALLAX: fermented California prune essence, made with Ultra-Ferm technology and a patented fibre micro-encapsulation process from Taiwan.
- Black tea, acai berry and Japanese plum.
- NUTRIOSE: a soluble fibre made from wheat. Each sachet gives 3.8 g of fibre, about as much as 2 cups of raw cabbage.
Each sachet has 19 kcal, no added sugar, no preservatives, no artificial flavouring and no laxative substances.
Kuro Kosen review: what it does and does not do
Kuro Kosen is best understood as a fibre drink you take before meals. Here is what Wellous’s materials claim for its ingredients. The e-flyer and posters give these figures without naming the studies, so read them as the maker’s claims:
- NUTRALLAX prune essence: bowel movement frequency up to 120% higher.
- NUTRIOSE soluble fibre: feeling full for up to 4 hours.
- Black tea: metabolic rate up to 5% higher, 30% less fat absorbed and 25% more good gut bacteria.
What that means in practice: taken 30 minutes before lunch and dinner with a full glass of water, the fibre helps you feel fuller before you eat, and the fibre and prune essence support regular digestion. Those are the realistic effects to look for.
What it does not do: Kuro Kosen will not make you lose weight on its own if you keep eating the same way. It is not a meal replacement or a slimming medicine, and we would be wary of any before-and-after photo credited to Kosen alone. For weight loss, pair it with a plan: in the Zenso Pro set it is part of a 30-day meal plan with Kuro Daitto meal replacement.
How do I take Kuro Kosen?
As a drink
- Mix 1 sachet with 200 ml of room-temperature water.
- Shake well and drink it straight away.
- Take it 30 minutes before a meal, ideally before lunch and dinner.
As a jelly
- Mix 1 sachet with 100 ml of hot water in a container with a lid.
- Close the lid and shake well.
- Keep it in the fridge for 30-60 minutes, then eat it before your meal.
Wellous’s how-to poster suggests 2 sachets with 400 ml of water per meal for best results. It is also handy before a big dinner or a gathering.
How long does one box last?
It depends on how many you take. A box has 30 sachets, so:
- 1 sachet a day: 30 days.
- 1 sachet before lunch and 1 before dinner: 15 days.
- 2 sachets before lunch and 2 before dinner: about a week.
Kuro Kosen with Zenso
Kuro Kosen can be taken on its own or with the rest of the Zenso range. The Zenso Pro set is the Advance set plus 2 boxes of Kuro Kosen. On the Pro plan, you take 2 sachets of Kuro Kosen in the afternoon or at night, 30 minutes before a sachet of Kuro Daitto. Which Zenso set to choose explains the plans.
Does Kuro Kosen have side effects?
Kuro Kosen is classified as a food product and has no laxative substances. Points to know:
- More fibre: if you do not usually eat much fibre, you may go to the toilet more often, or have some wind or bloating in the first days. Drink plenty of water through the day, and start with 1 sachet before moving up to 2.
- Wheat: the fibre is made from wheat. A Bio Synergy Laboratories test (May 2024) found no gluten, but if you have a wheat allergy, ask your doctor first.
- Black tea: Kuro Kosen contains black tea, which naturally has some caffeine. If you are sensitive to caffeine, avoid taking it close to bedtime.
- Pregnancy, medicines and medical conditions: if you are pregnant or breastfeeding, take any regular medicine or have a medical condition, speak to your doctor before taking it.
If you notice a reaction, such as a rash or a stomach upset that does not settle, stop and see a doctor.
Is Kuro Kosen Halal and safe?
Yes. Both flavours, Prune and White Peach, are Halal certified by JAKIM, valid until 15 September 2027. Kuro Kosen is classified as a food product by NPRA (Ministry of Health Malaysia), so it does not carry a MAL number. Bio Synergy Laboratories tested it in April 2025 and found no arsenic, lead, cadmium, mercury or antimony, and no harmful microbes. If you would like to see the certificates, message us on WhatsApp.
How much is Kuro Kosen in Malaysia?
These are our current prices, including any promotion that is running. Delivery is free anywhere in Malaysia.
| Option | Price |
|---|---|
| 1 box, 30 sachets | RM320 |
| 3 boxes, 90 sachets | RM607 |
All Wellous prices: Wellous price list in Malaysia.
Where can I buy genuine Kuro Kosen?
Buy from an authorised Wellous dealer and check the QR code on the back of every box: scan it with any QR reader app; each code can only be verified once. Step by step: how to verify your Wellous product. Marketplace listings come from many different sellers, and a price far below the usual can mean old stock, parallel imports or counterfeits.
Ringkasan dalam Bahasa Melayu
Apa itu Kuro Kosen?
Minuman serat daripada Zenso (Wellous) dengan cuka hitam Kurozu yang ditapai 3 tahun, esen prun NUTRALLAX, teh hitam dan serat gandum larut NUTRIOSE. Setiap sachet 19 kcal dengan 3.8 g serat. Satu kotak 30 sachet: 15 Prune dan 15 White Peach.
Cara ambil
Campurkan 1 sachet dengan 200 ml air suhu bilik, atau jadikan jeli, 30 minit sebelum makan tengah hari dan makan malam. Kuro Kosen bukan pengganti hidangan atau ubat kurus.
Kesan sampingan, Halal dan harga
Tiada bahan julap, tetapi lebih banyak serat boleh menyebabkan lebih kerap ke tandas atau kembung pada mulanya, jadi minum banyak air. Disahkan Halal oleh JAKIM. Harga satu kotak RM320, dengan penghantaran percuma ke seluruh Malaysia.
More questions about Kuro Kosen
No. It is a fibre drink you take 30 minutes before a meal. In the Zenso plans, the meal replacement is Kuro Daitto.
Yes. You can take it on its own before meals. For weight management, pair it with a balanced diet or a Zenso set.
1 sachet per serving, ideally before lunch and dinner. Wellous suggests 2 sachets with 400 ml of water per meal for best results.
It has no laxative substances, but the fibre and prune essence support regular digestion, so you may go to the toilet more regularly. Drink plenty of water.
Use room-temperature water for the drink. Hot water is for the jelly: mix with 100 ml of hot water, shake and chill for 30-60 minutes.
Yes. Both flavours are Halal certified by JAKIM, valid until 15 September 2027.
Kuro Kosen is a food product. It is not a meal replacement or a slimming medicine, it is not intended to diagnose, treat, cure or prevent any disease, and individual results vary.