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NEWFour cans of Korthals' Collection No. 537 Black Cherry Kratom Seltzer, 75 mg mitragynine per 16 oz can
Korthals' Collection

No. 537 Kratom Seltzer Black Cherry - 4 pack

★ 4.5 · 2 reviews
$ 38.00Lab tested75mg Mitragynine / can
$ 9.50 per can · $ 8.55 with Auto-Replenish
MoodRelaxationStarter friendly
  • Ready to drink, nothing to measure
  • 75mg Mitragynine per can, full spectrum
  • Sugar-free, bold cherry flavor

Serving guideStarter75mg Mitragynine / can

Two servings (one full can). 75mg of full spectrum mitragynine for the full experience.

Dosing guide only, not a product option. Start low, and give it time to take effect before having more.

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

No. 537 Black Cherry Certificate of Analysis

Like caffeine and sugar, kratom may be habit-forming. Use kratom responsibly and only as directed. Do not use if you are pregnant or lactating. Do not combine or mix with alcohol. Use caution while operating machinery. Keep away from children and pets. Discontinue use if you experience any negative effects. Must be 21+ to purchase.

Your pour

Korthals' Collection No. 537 Kratom Seltzer delivers bold black cherry flavor and crisp carbonation in a refreshing 16oz can. Made with full spectrum kratom alkaloids, No. 537 may support mood and relaxation, whether you are winding down after a long day, want something more interesting than sparkling water, or are reaching for an alternative to a drink.
✔ 75mg Mitragynine per can (37.5mg per serving)
✔ Full Spectrum Kratom Extract
✔ Zero Calories, Naturally Flavored
✔ Third-party lab tested for purity and potency

Verified
★ 4.5 · 2 reviews
Secure checkout 3rd-party lab tested
📄

No. 537 Black Cherry Certificate of Analysis

Serving guide

Find your serving

Dosing shouldn't be a guessing game.

1.0 servings
37.5mg
Light & Easy
One serving (half a can). Start here if you're new to kratom beverages or want a lighter experience.
2.0 servings
75mg
The Full Experience
Two servings (one full can). 75mg of full spectrum mitragynine for the full experience.
What's inside

Honest ingredients

Nothing hidden. Tap any ingredient to open it up.

The foundation of every can. Clean, filtered water with crisp carbonation for a light, refreshing finish.

Bold black cherry flavor crafted from natural sources for a smooth, refreshing taste.

Full spectrum kratom extract with 75mg mitragynine per can for a balanced, whole-plant experience.

A food-safe preservative that keeps every can fresh and shelf-stable without affecting flavor.

The flavor

Dark cherry, crisp finish

75 MG MITRAGYNINE0 CALORIES0G SUGAR4 CANS X 16 OZ
No. 537 Kratom Seltzer Black Cherry - 4 pack
How

How Does It Work?

When you drink a kratom seltzer, the mitragynine alkaloids are absorbed through your digestive system, typically taking effect within 15 to 30 minutes. No. 537 contains 75mg of full spectrum mitragynine per can, with the alkaloid composition at less than 2% 7-hydroxymitragynine and approximately 0.02% mitragynine by weight. The carbonation helps with faster absorption compared to thicker liquids. Start with half a can (37.5mg) if you're new to kratom, and give it time before consuming more.

When

When Should I Drink It?

A social night out without the hangover, unwinding after a long day, the reset between work and evening, or anytime you want something more interesting than sparkling water. Crack one 15 to 30 minutes before you want to feel the effects. At 75mg per can, No. 537 is built for those familiar with kratom. If you're newer to it, start with half a can and go from there.

No. 537 Kratom Seltzer Black Cherry - 4 pack
NO. 537 · BLACK CHERRY · 75 MG PER CAN
The collection

Find your strength

No. 520 Kratom Kava Seltzer - Gooseberry (Limited Edition)NO. 520Gooseberry40 MG + KAVA
YOU'RE HERENo. 537 Kratom Seltzer Black CherryNO. 537Black Cherry75 MG
No 539 Lemon Kratom SeltzerNO. 539Lemon Tea75 MGNo. 513 Kratom Old Fashion Lemonade 16ozNO. 513Old Fashioned Lemonade100 MGNo. 574 Strawberry Kiwi Seltzer - Special EditionNO. 574Strawberry Kiwi100 MG
Good to know

Questions, answered

What is No. 537 Kratom Seltzer?

No. 537 is a ready-to-drink kratom seltzer made with full spectrum kratom alkaloids. Each 16oz can delivers 75mg of mitragynine in a refreshing black cherry flavor with zero calories.

How much kratom is in each can?

Each 16oz can contains 75mg of mitragynine from full spectrum kratom extract. The serving size is half a can (8oz) which contains 37.5mg. The alkaloid composition is less than 2% 7-hydroxymitragynine.

What does it taste like?

No. 537 has a bold, refreshing black cherry flavor with crisp carbonation. It's light, bubbly, and easy to drink. Naturally flavored with other natural flavors.

How should I drink it?

Shake gently before opening and serve chilled. If you're new to kratom, start with half a can to assess your tolerance and wait at least 30 minutes before consuming more. Refrigerate after opening.

Is it safe to mix with alcohol?

No. Do not combine or mix this product with alcohol. Consume responsibly and discontinue use if you experience any negative effects.

What is a kratom drink?

It is a ready-to-drink beverage made with kratom leaf extract. Nothing to measure, nothing to mix. Kratom comes from the leaves of the Mitragyna speciosa tree, native to Southeast Asia, where it has been enjoyed for centuries. Think of it as the middle ground between coffee and a beer: alert but relaxed, social but clear-headed.

How much is one serving?

One can or bottle is one full serving, so drink the whole thing or share it, your call. Check the label for the amount of kratom extract in each container, and start with less if it is your first time. Like caffeine and sugar, kratom may be habit-forming. Use kratom responsibly and only as directed.

How fast does it work?

Effects typically begin within 15 to 30 minutes, since a liquid absorbs faster than powder or capsules. How long it lasts varies from person to person. Give it the full window before you open another.

Can you ship kratom drinks 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, and our checkout will flag an address we are not able to ship kratom to. The current list of restricted areas is in our site footer. Shipping costs on beverages are calculated at checkout.

Can I pick it up in store?

Many kratom drinks are available for in-store pickup, and singles are often easier to find on the shelf than online. Choose the pickup option on this page or at checkout to see which nearby locations have it in stock.

In-Store Pickup & Local Delivery

Available for in-store pickup and local delivery at 55+ CBD Kratom locations nationwide.

Lab-Tested Quality

Every batch is third-party tested for purity, potency, and compliance.



Full Spectrum Kratom

Made with full spectrum kratom alkaloids for a balanced, whole-plant experience.



Ready when you are.

Add the Black Cherry Kratom Seltzer 4-Pack to cart
Black Cherry Kratom Seltzer 4-Pack$ 38.00