Quick Verdict
Club 13 Kratom Seltzer is built as a strength ladder rather than a single fixed dose. The same seltzer line is sold at three labeled mitragynine levels, so you choose intensity at the shelf. Useful if you already know your dose. It's a liability if you don't, because the gap between the bottom and top of the ladder is roughly fourfold and the cans sit side by side in the same cooler.
Best for: experienced drinkers who know their number and want to buy exactly it.
Skip if: you're new to kratom beverages, or you buy from a cooler without reading labels closely.
Disclosure: we make kava-kratom tonics, not seltzers. Club 13 doesn't compete directly with anything in our catalog, and that's part of why we can write about it plainly.
Table of Contents
- Why the strength ladder changes the review
- Who Club 13 is
- The lineup by strength and price
- Flavor and drinkability
- Onset, and what the evidence actually supports
- Lab testing and the batch portal
- Price per milligram across the ladder
- The multi-strength problem
- How it compares to single-strength seltzers
- Pros and cons
- Who should buy which tier
- FAQ
- Final verdict
TL;DR
- Club 13 is a long-running Florida kratom company. Its seltzer line runs 16 SKUs across three labeled strengths.
- Strengths as labeled: 35 MIT, 75 MIT, and 150 MIT, priced at roughly $6.99, $9.95, and $14.99 respectively.
- The ladder is the brand's biggest advantage and its biggest risk at the same time.
- Flavor holds up well at the lower tiers. Higher tiers taste more bitter. That's chemistry, not a formulation failure.
- Lab results are retrieved through a batch portal using the lot number on your can, not browsed as a public library.
- Cost per milligram improves as you climb. That's precisely the incentive that talks people into buying stronger than they need.
- All milligram figures here are as labeled by the manufacturer. None are independently assayed.
Why the Strength Ladder Changes the Review
Most kratom seltzer reviews can be written the normal way: describe the product, taste it, check the lab results, render a verdict. Club 13 doesn't work like that, because "Club 13 Kratom Seltzer" isn't one product. It's a family of drinks that share a can design and differ substantially in what's inside.
Reviewing the light version and the heavy version as though they're the same product would be useless. So this review treats the ladder itself as the product. That's the only fair way to judge it.
One thing to get right up front, because you'll see it claimed carelessly: Club 13 is not the only multi-strength kratom beverage brand. Rapture, for example, sells both a 55 mg and a 100 mg line. Club 13's ladder is wider and more granular than most, but it isn't unique, and any review telling you otherwise hasn't checked.
Who Club 13 Is
Club 13 operates out of Hastings, Florida, with a catalog spanning powders, capsules, extracts, and beverages. The company states it was founded in 1999, which if accurate makes it one of the longest-running names in the American kratom market. That founding date is the company's own claim rather than something we could independently verify, so treat it as self-reported.
Operating history matters for a beverage review because liquid manufacturing is harder than bagging powder. Shelf stability, keeping alkaloids evenly suspended, masking the flavor. All three are real engineering problems, and a company that came to beverages from bagging powder usually gets at least one of them wrong on the first run.
The Lineup by Strength and Price
| Tier | Labeled mitragynine | Typical price | Positioned for |
|---|---|---|---|
| 35 MIT | 35 mg | ~$6.99 | First-timers, social settings, daytime |
| 75 MIT | 75 mg | ~$9.95 | Regular users with established tolerance |
| 150 MIT | 150 mg | ~$14.99 | Experienced users only |
Look at that spread. The top tier carries four times what the bottom one does. For comparison, that gap is wider than the entire range between most competing brands' single-strength products.
The line spans 16 seltzer SKUs across flavors including black cherry, mango, blood orange, watermelon, blue raspberry, and lemon lime, with different flavors available at different strengths rather than every flavor at every tier.
Verify the exact figure on the can you're holding. Formulations and SKU availability change, and the figures above reflect the lineup as published at the time of writing.
Flavor and Drinkability
Kratom is bitter. Every drink in this category is an exercise in hiding that, and the job gets harder the more alkaloid goes in the can.
At 35 MIT they pull it off. The carbonation and fruit flavoring carry it, and the bitterness sits in the background rather than the foreground. It drinks like a flavored seltzer with a slightly herbal finish.
At 150 MIT, the math catches up. There's simply more bitter compound to mask, and no amount of flavoring fully hides it. The finish is noticeably more herbal and lingers longer.
This isn't a criticism of Club 13's formulation specifically. Every brand in this format runs into the same wall. Understand that before you assume a stronger can tastes like the weaker one you liked.
Onset, and What the Evidence Actually Supports
You'll find confident claims across kratom blogs that liquids hit in 15 to 30 minutes while capsules take 30 to 45. We went looking for the source of those numbers and couldn't find one outside of vendor marketing. They get repeated because they sound plausible, not because anyone measured them.
What the actual literature supports is narrower and directional. Human pharmacokinetic work on kratom tea found peak plasma mitragynine at roughly 50 minutes, while studies of encapsulated leaf powder put the peak nearer one to one and a half hours. That's consistent with liquids arriving sooner, which makes mechanical sense given there's no capsule shell or powder to break down first. But peak plasma concentration isn't the same thing as when you notice something, and none of that work studied an extract-based seltzer.
The practical takeaway survives regardless: give it a full 45 minutes to an hour before deciding the first can didn't work. Faster onset makes the temptation to open a second one stronger, and that's how people overshoot.
Lab Testing and the Batch Portal
Club 13 runs a batch authentication portal and states that products are tested by certified third-party labs for alkaloid content, heavy metals, microbiological contamination including Salmonella and E. coli, and botanical identity.
The access model matters and is worth describing precisely: you enter the lot number from your packaging and the portal returns that batch's certificate of analysis. It is not a browsable public library you can read before buying. That's better than testing you can't see at all, and less convenient than results posted on the product page.
What to check when you pull yours:
- Mitragynine per serving matches the tier on the can. With three strengths sharing similar packaging, label accuracy carries more weight than usual.
- 7-hydroxymitragynine at trace levels. Should be a small fraction of a percent in any leaf-derived product.
- Heavy metals panel. Arsenic, cadmium, lead, mercury.
- Microbial screening. This matters more for liquids than for powder, because water activity supports growth that dry material does not. FoodSafety.gov's overview of foodborne bacteria is a decent primer on why Salmonella and E. coli screening exists.
If you want a fuller walkthrough of what these panels mean, our published lab results show what a full panel looks like line by line.
Price Per Milligram Across the Ladder
Divide can price by labeled milligrams and the pattern is immediate: $6.99 for 35 mg is about 20 cents per milligram, while $14.99 for 150 mg is about 10 cents. The top tier is roughly half the unit cost of the bottom.
That's real value if the top tier is the dose you want. It's a trap if it isn't.
The incentive structure here deserves naming plainly. A ladder priced this way rewards climbing it, and the reward is financial while the cost is physiological. Buying up a tier to save on unit cost means swallowing more alkaloid than you meant to. Bad trade, whatever the arithmetic says.
Our position: pick your tier based on the dose you want, then compare prices within that tier across brands. Never let the per-milligram math pull you upward.
The Multi-Strength Problem
Most reviews of this product skip the next part.
Multi-strength lines in similar packaging create a specific failure mode: grabbing the wrong can. In a cooler, under store lighting, with three variants sitting side by side, the distinguishing information is a small number on the label rather than a dramatically different can design.
A person who has been drinking 35 MIT comfortably and accidentally picks up 150 MIT consumes roughly four times their usual dose without any intention of doing so. That's not a hypothetical edge case. It's the predictable result of putting a 4x dose range into visually similar packaging.
This isn't a theoretical worry in the aggregate, either. CDC surveillance data published in March 2026 documented a substantial rise in kratom-related poison center reports over the preceding decade, and in July 2026 America's Poison Centers issued a health advisory covering illnesses linked to kratom and concentrated 7-OH products. Accidental over-dosing from unclear labeling is exactly the kind of avoidable contributor to those trends.
The fix is entirely on the buyer: read the strength on every single can before you open it, including cans from a multipack you've bought before. Do not rely on can color or flavor name.
How It Compares to Single-Strength Seltzers
| Factor | Club 13 (multi-strength) | Typical single-strength brand |
|---|---|---|
| Dose flexibility | High, three labeled tiers | Low, one number |
| Risk of wrong dose | Elevated, similar packaging | Minimal |
| Cost per mg at top tier | Favorable, roughly half the entry tier | Fixed |
| Flavor consistency across line | Degrades at higher tiers | Consistent |
| Suitability for beginners | Only at 35 MIT | Depends on the fixed dose |
For a broader look at how the whole format stacks up, our comparison of kratom seltzer brands puts the major options side by side.
Pros and Cons
Pros
- Real dose choice across a wide range
- Established manufacturer with beverage production experience
- Third-party testing with a lot-number batch portal
- 35 MIT is approachable in a category that mostly isn't
- Wide flavor selection and retail availability
Cons
- Similar packaging across a 4x dose range invites mistakes
- Flavor degrades meaningfully at higher tiers
- Per-milligram pricing incentivizes buying stronger than needed
- Lab results require a lot number rather than being posted publicly
- Not every flavor is available at every strength
Who Should Buy Which Tier
New to kratom beverages: 35 MIT only, and give it a full hour before forming an opinion. Better still, start with something single-strength so there's no ladder to accidentally climb.
Regular user with a known tolerance: 75 MIT is where Club 13's proposition makes the most sense. You get a dose that matches you rather than a dose the brand picked.
Experienced and specifically want a high dose: 150 MIT delivers, with the flavor and cost caveats above.
Anyone buying from a cooler in a hurry: consider a single-strength product. The flexibility isn't worth the error rate if you're not going to read labels every time.
FAQ
How much mitragynine is in a Club 13 kratom seltzer?
It depends on the tier. The line is labeled at 35, 75, and 150 mg of mitragynine per can. Check the specific can, since the range across the line is fourfold.
Is Club 13 kratom seltzer good for beginners?
The 35 MIT tier can work. The higher tiers are not beginner products. The bigger concern is that a multi-strength line asks you to check labels every single time. Most beginners haven't built that habit yet.
Does Club 13 publish lab results?
Club 13 operates a batch authentication portal where you enter the lot number from your packaging to retrieve that batch's certificate of analysis. Results are not posted as a browsable public library.
How long does a kratom seltzer take to work?
There's no well-sourced number for subjective onset. Human pharmacokinetic data on kratom tea shows peak plasma levels around 50 minutes, sooner than encapsulated powder. Practically, wait a full 45 minutes to an hour before concluding it hasn't worked.
Why does the stronger version taste more bitter?
More alkaloid means more bitter compound to mask, and flavoring can only cover so much. This is a constraint of the format rather than a flaw specific to Club 13.
Is Club 13 the only multi-strength kratom seltzer?
No. Rapture also sells multiple strengths. Club 13's ladder is wider than most, but it isn't the only one.
Final Verdict
- Club 13's strength ladder is a real differentiator, and for the right buyer it's the best thing about the product.
- That same ladder, in similar packaging across a 4x dose range, is the product's main risk.
- Read the strength on every can, every time. This is the single most important habit for anyone buying this line.
- Don't let per-milligram pricing choose your tier.
- If you don't yet know your dose, a single fixed-strength product removes an entire category of mistake.
We don't make a seltzer, so there's no competing can to sell you here. What we do make is a kava-kratom tonic built around a single fixed serving, with kava's own character alongside the kratom rather than a fruit-flavored carbonated base. If the ladder problem above is what's putting you off seltzers, that's a different answer to the same question, and our batch lab results are published rather than gated behind a lot lookup. The variety bundle is the cheapest way to find out whether the format works for you.
Product specifications, pricing, and lab access methods reflect publicly available information as of July 2026 and change without notice. All milligram figures are as labeled by the manufacturer and are not independently assayed. Verify current formulation directly with the brand. This is education, not medical advice. These statements have not been evaluated by the FDA. Not for use by anyone under 21, pregnant, or nursing.
