Hulu Kapuas Kratom: A Comprehensive Guide to This West Kali Strain

January 05, 2020 Articles, Kratom Alkaloids, Kratom Blends, Kratom Capsules, Kratom Extracts, Kratom Legality, Kratom Products, Kratom Research, Kratom Reviews, Kratom Strains, Kratom Tea, Kratom Vendors

When it comes to the many types of Kratom available, variety really is the spice of life. With hundreds of vendors sourcing a multitude of kratom strains from Indonesia, Laos, Malaysia, Myanmar, Vietnam and more, there is no shortage of options to choose from.

Seasoned kratomites can attest to the fact that all strains are not created equal. That’s because each kratom strain contains its own unique alkaloid profile. For instance, Maeng Da kratom contains a larger percentage of mitragynine, kratom’s most abundant constitutent, than virtually any other strain on the market.

Some select strains contain higher concentrations of paynantheine and speciogynine, making for a sleepier experience that’s geared toward those who wish to get a restful night’s sleep. Alternately, some strains contain higher concentrations of 7-hydroxymitragynine, making for a more exhilarating brew.

Hulu Kapuas kratom is unique among these other strains in that it is rich in a number of alkaloids such as corynoxein, corynantheidine, isomitraphylline, mitraciliatin, mitraphylin and speciofoline. It is also known for possessing the highest concentrations of 7-hydroxymitragynine.

In this way, Hulu Kapuas differentiates itself from other strains by offering all of the attributes of so-called daytime strains as well as those of nighttime strains. Both sharp and smooth, Hulu Kapuas provides a full spectrum experience that bests even the strongest of kratom extracts.

The origins of this particular strain are interesting because of the history surrounding it.


Hulu Kapuas gets its name from the Kapuas Hulu forests in Kalimant Barat, Indonesia. The indigenous people of the Dayak Iban community of Sungai Utik have been fighting to maintain their sovereignty over the land for 40 years.

After a near-half century struggle, they have succeeded in protecting their land rights and preserving the natural richness and integrity of this forest. In November of 2019, the chief of the Dayak Iban welcomed the government to celebrate with them as they were legally recognized by the same as the stewards of 7,500 hectares of rainforest.

It is here, among these 7,500 hectares, that the Dayak Iban grow and harvest Kapuas Hulu trees. These 80 ft. Mitragna speciosa trees are grown in ideal conditions and cared for regularly, producing leaves of the utmost vibrancy and maturity.

Since the region’s kratom trees can only be harvested seasonally, kratom powder is in short supply. This is why it has become one of the rarest forms of kratom on the current market. With Kapuas Hulu trees growing along the Kapuas River, their roots are often flooded, adding to the scarcity of harvested plant matter.

The typical lifespan of a Mitragyna speciosa tree is 1-5 years which means obtaining true OG (old grown) kratom leaf is something that seldom occurs among Westerners. Those who can source it year-round are likely not sourcing it from a legit West Kalimantan forest range.


There are three different vein colors of the Hulu Kapuas variant. Each of these veins share similarities, but each has its own disparate effects. This is due to the varying concentrations of alkaloids and flavonoids in the vein portion of their leaves.

Green Hulu Kapuas (hereafter referred to as Green HK) is the green vein which contains lower levels of 7-hydroxymitragynine than its counterparts. It makes up for this with its substantial concentrations of mitragynine.

Green HK is a nice cross between Red HK and White HK in that it is more soporific than most greens but, also, more cerebral than most reds. An enlivening strain with nootropic qualities, Green HK is a bestseller among students and working professionals.

By contrast, Red Hulu Kapuas (hereafter referred to as Red HK) contains loads of 7-hydroxymitragynine but far less mitragynine than Green HK. Red HK is a well-balanced variant which is often used by people who want to feel more confident and optimistic.

White Hulu Kapuas (hereafter referred to as White HK) is widely considered an alternative to coffee. This is ironic given the fact that the Mitragyna speciosa tree belongs to the coffee family of plants. Nevertheless, it has been embraced by a wide cross-section of entrepreneurs, athletes, executives and artists for its value as a pick-me-up and its rejuvenating effects.

Reds and whites are often mixed together in proprietary kratom blends due to their shared properties and supposed nootropic efficacy.


Recommending a dosage always seems ill-advised given kratom’s standing in the Western world. As it stands, kratom is not approved for medicinal use by the FDA and cannot be classified as a natural supplement.

That being said, kratom remains largely unregulated in the majority of American states. It is widely legal to buy, sell or consume kratom at your own risk. However, first-time users should bear in mind that kratom comes with its fair share of side effects, side effects that are more likely to occur at larger dosages.

Most seasoned users would agree that the following represents a responsible range of dosages:

  • Novice (First-time dosage)—1-2 grams
  • Low—2.5-4 grams
  • Moderate—4.5-6 grams
  • High—6.5-8 grams


The natives of Southeast Asia have been chewing on the raw, wildcrafted kratom leaves for centuries. This remains common today and is certainly a viable means by which anyone can enjoy the aroma of kratom.

Here in the United States, it is more customary for one to brew a cup of kratom tea or opt for the old “toss ‘n wash” (sticking a spoonful of kratom powder in your mouth and chasing it with the drink of your choice).

The most convenient method of consumption is taking 00 size kratom capsules. These pre-prepared vegetarian capsules are filled with just the right amount of kratom powder, taking much of the headache out of the preparation process.

If you don’t want to leave things to chance or trust a vendor to prepare your kratom caps for you, there’s always the DIY method. Many users purchase their own empty caps and fill them on their own using a digital scale for precise measurement.


Reddit users have been buzzing about HK for some time with one person writing, “Green Hulu is my favorite green vein strain at the moment, great choice.”

Another user agreed with this assessment, saying, “Green Hulu’s freakn rock! I love the red Hulu’s also.. They both are always in my rotation… Green Hulu’s are perfect for dosing before work They give you a positive attitude and always a smile….also I love the fact that it’s nootropic My mind is always in tune with what’s happening around me at all times….red Hulu’s are excellent in the evening…they do not make you sleepy like red Bali. But are more relaxing than the green.”

Elsewhere, an administrator for Double M Herbals said of Canopy’s Green Hulu Kapuas, “Whenever I take this strain, I get into a very calm state of mind. It’s great for anxiety and will keep you feeling good for hours. It won’t necessarily make you drowsy like some strains do, but it puts you into total relaxation mode so you could fall asleep easily if you wanted to.”

This person is quick to add that first-timers should keep their dose on the low side to avoid the potential for nausea or dizziness.


As the most popular form of HK kratom, Green Hulu is almost always readily available from innumerable e-commerce sites. These sites are run by a multitude of kratom vendors, some of them legit, many of them anything but.

In the interest of offering sound advice to our readers, I present the following short list of trusted vendors with HK kratom capsules in stock:

  • Kats Botanicals
  • Original Harvest Kratom
  • Purkratom


When selecting a kratom seller, make sure to ask some questions and shop around. See what users have to say about a prospective brand. See if the vendor in question posts third party lab results on their site.

With access to kratom coupon codes and e-commerce sites with money back guarantees, you’re bound to find a brand that’s right for you. Happy hunting!

Bob Freville
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