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Aged StrainKorthals' Collection No. 471 Dark Green Borneo kratom capsules, 10 capsule bag
Korthals' Collection

No 471 Dark Green Borneo Kratom Capsules

Dark Green Borneo kratom leaf, dried longer than traditional Green Borneo, in capsules.

$ 10.00Lab tested
  • Korthals' Collection No. 471 Dark Green Borneo, an Aged Strain
  • Counted, not weighed: each serving is a number of capsules
  • Five bag sizes: 10, 30, 90, 180 or 360 capsules

Start low, go slow. Wait at least an hour before taking more.

Sizes marked Sold out may be available for in-store pickup. Find a store.

  • Discounted price on every refill
  • Skip, pause, or cancel anytime
  • Delivery on your schedule
Secure checkout 3rd-party lab tested

Like caffeine and sugar, kratom may be habit-forming. Use kratom responsibly and only as directed. Must be 21+ to purchase.

First time?

What to expect. Start low, go slow.

  • Start low.
  • Go slow. Wait at least an hour before taking more.

Must be 21+ to purchase. Like caffeine and sugar, kratom may be habit-forming. Use kratom responsibly and only as directed.

Overview

Dark Green Borneo kratom, dried longer than traditional Green Borneo, may offer enhanced energy, focus, and mood elevation. No. 471 is printed on the bag as an Aged Strain and comes from Korthals' Collection in pre-measured capsules, so every serving is a simple count.

What's inside

Honest ingredients

Dried, milled leaf of Mitragyna speciosa, the kratom tree. Dark Green Borneo leaf is dried longer than traditional Green Borneo, then packed into capsules. Mitragynine is the most abundant natural alkaloid in the leaf.

How

How Does It Work?

Every capsule is filled with Dark Green Borneo leaf powder, so your serving is simply how many capsules you take. Start low, go slow. Swallow them with water and wait at least an hour before deciding on more. Responses vary from person to person.

When

When Do I Use It?

Many people choose Dark Green Borneo for the daytime into the afternoon, from a busy morning to the stretch after lunch. Because capsules are pre-measured and have no powder taste, a bag is easy to bring to work or take on a trip.

Kratom Strain

Choose your strain

Prefer powder? Shop No 171 Dark Green Borneo Kratom Powder

Good to know

Questions, answered

What does Aged Strain mean on the No. 471 bag?

Dark Green Borneo is dried longer than traditional Green Borneo, and the bag prints it as an Aged Strain. Our kratom strains run White, Aged, Mixed, Green, Yellow, Orange, Red, so No. 471 sits second on that list rather than with the Green Vein strains. Many people choose it for the daytime and afternoon.

How should I start?

Start low, go slow, and take them with water. Wait at least an hour before you decide on more. Like caffeine and sugar, kratom may be habit-forming. Use kratom responsibly and only as directed.

Which bag size makes sense to start?

The 10 capsule bag is the smallest size, an easy way to get to know Dark Green Borneo. Larger bags cost less per capsule, and the size picker shows the price per capsule for each one. Subscriptions deliver every 7, 14 or 30 days, and subscribers save.

Has No. 471 been lab tested?

Yes, as part of our green kratom testing. Murray-Brown Laboratories, an independent lab, tested a sample described as Korthals Green Kratom for its alkaloid content; the certificate is dated December 2025. Our Test Results page lists that same certificate for several strains, including Dark Green Borneo, so it is not a test of No. 471 alone. It is also linked on this page.

How should I keep the capsules fresh?

Keep the bag sealed and store it somewhere cool and dry, away from direct sunlight and out of reach of children and pets.

What is kratom?

Kratom comes from the leaves of the Mitragyna speciosa tree, native to Southeast Asia, where it has been part of daily life for centuries. The leaf is dried and milled into powder, then packed into capsules, brewed, or made into extracts. Its natural leaf compounds are called alkaloids, and mitragynine is the most abundant one.

How should I start with kratom?

There is no single answer, because everyone responds differently. Start low, go slow, and give it time before deciding on more. A small kitchen scale helps if you are using powder. Like caffeine and sugar, kratom may be habit-forming. Use kratom responsibly and only as directed.

How long should I wait before taking more?

Everyone responds differently, so there is no set timeline. Start low, go slow: wait at least an hour after capsules, and at least 30 minutes after other formats, before taking more.

Can you ship kratom to my state?

We cannot ship kratom to Tennessee. Kratom is also restricted in a handful of other states and in some counties and cities. Our checkout will flag an address we are not able to ship kratom to, and the current list of restricted areas is in our site footer. If you are in a restricted area, our stores and our non-kratom selection are still open to you.

Can I pick it up in store?

Many kratom items are available for in-store pickup, and shelf selection can differ from what is online. Choose the pickup option on this page or at checkout to see which nearby locations have it in stock.

Free Shipping Over $100

Free shipping on orders over $100, exclusions apply. In-store pickup and local delivery at CBD Kratom stores.

Lab-Tested Quality

Independent lab results from Murray-Brown Laboratories are linked on this page.

Subscriptions Available

Subscribe and save on deliveries every 7, 14 or 30 days. Change or cancel anytime from your account.

Ready when you are.

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No. 471 Dark Green Borneo Capsules$ 10.00