Pick a flavor

01 / 04

Grapefruit

Sun-ripe pink grapefruit, tart and bright, with a crisp citrus snap on the finish.

  • Citrus
  • Tart
  • Bright

02 / 04

Sour Blue Razz

A pucker-up hit of sour blue raspberry that melts into candy-sweet berry.

  • Sour
  • Berry
  • Electric

03 / 04

Rocket Pop

The red, white and blue ice-pop flavor, layered like the summer classic: fruity up front, sweet and cool on the finish.

  • Fruity
  • Sweet
  • Nostalgic

04 / 04

Strawmelon

Juicy watermelon and ripe strawberry, poured over ice. Sweet, fresh and summer-bright.

  • Strawberry
  • Watermelon
  • Juicy

6 Pack Seltzer$47.99

Check COA

  • 150 mgMitragyna material
  • 0 gsugar
  • 0 mgcaffeine
  • 12 fl ozper can
  • Lab testedevery batch
  • 21+adults only

All lab results21+For adults 21 and over. ID verified at checkout.

Build a mixed pack

Pick any mix of flavors. Each flavor's lab report is linked above.

  • Grapefruit 0
  • Sour Blue Razz 0
  • Rocket Pop 0
  • Strawmelon 0

Can't pick?

Try all four.

One can of every flavor in a 4-pack. Find your favorite, then stock up.

$35.00 $8.75 a can4 cans, one of each flavor

Or build your own mix

What's in the can

Numbers match the label and the lab report for the flavor you've selected.

Grapefruit
Mitragyna material per can 150 mg
Mitragynine per can 75 mg
7-OH per can Less than 0.01 mg
Can size 12 fl oz (355 mL)
Calories 0
Sugar 0 g
Caffeine 0 mg
Ingredients Water, Kratom Extract, Citric Acid, Gum Acacia, Natural Flavors, Sodium Benzoate (to preserve freshness), Acesulfame Potassium, Sucralose.
Cans per pack 6

Values from the most recent batch. See the lab report for exact results.

The science

Protected by design.

Our proprietary emulsion technology wraps the alkaloids in tiny protective droplets, built for better bioavailability.

  1. Wrapped

    Each molecule is suspended inside a tiny droplet instead of floating loose in the water.

  2. Protected

    The droplet's shell shields the molecule from breaking down in the can, from the fill line to your last sip.

  3. Bioavailable

    The emulsion is formulated for better bioavailability.

The flavor

Real flavor, in harmony.

The same emulsion that protects each molecule also carries our flavor, so you taste bright, true fruit that works with kratom's natural earthiness instead of fighting it.

  1. True, bright fruit

    Flavor is emulsified into the same tiny droplets, so real fruit notes come through clean and crisp in every sip.

  2. Melded, not masked

    Instead of piling on sweetness to cover the leaf, the flavor blends with kratom's natural bitterness into one smooth, balanced taste.

  3. Zero sugar needed

    Nothing to hide means no sugar to hide it with. Just a crisp, refreshing seltzer, best served ice cold.

  • Embrace the HEAT
  • Crisp
  • Refreshing
  • Made for the moment
  • Four signature flavors

Quality you can verify

Every batch, third-party tested

Each flavor has its own third-party lab report.

  • GMP standards

    Made to Good Manufacturing Practice (GMP) standards in ISO-certified facilities.

  • Every batch, held to spec

    Every batch is held to the highest quality and production standards before it ships.

  • Credible third-party labs

    We test only with credible, independent labs, so every result is transparent and accurate.

  • Mitragynine measured every batch
  • Results published per flavor
  • Third-party labs
  • Batch code and test date on every report
View all lab reports

Before you buy

The fine print, made easy.

How the seltzer compares, where we ship, and answers to the questions we get most.

Seltzer or tablet?

Same lab standards, two formats.

Seltzers Tablets
Format Sparkling can Flavored tablet
Packs 6-can pack or mixed pack 4 or 10 tablets, or a mixed pack
Serving size See can label See pack label
Lab report Per flavor and batch Per flavor and batch

Can we ship to you?

Some cities and counties also restrict kratom, including Sarasota County, FL; Union County, NC; Denver, CO; and Jerseyville, IL. Orders to those areas are cancelled and refunded.

Seltzer questions

Something else? Contact us.

How should I store the cans?

Keep them cool and out of direct sunlight. Refrigerate before opening for the best carbonation.

Can I drink it with alcohol?

No. Do not combine kratom with alcohol, medications, or other drugs. See the health warning below.

Who can buy StraightHeat?

Adults 21 and over. We verify your age at checkout.

Where do you ship?

We ship to most U.S. states. Use the checker on this page to see if we ship to your state. Orders to restricted states or localities are cancelled and refunded.

How do I read the lab report?

Each report lists the batch code, test date, lab name, and the measured alkaloids, including mitragynine and 7-OH. Match the batch code to the one printed on your product.

What's your return policy?

See our refund policy, or contact us if something arrives damaged.

Embrace the HEAT

Four flavors. Zero sugar. Zero caffeine. Pick yours.

BuyBuild a mixed pack

Health warning

This product may be harmful to your health and may cause addiction or dependence. Kratom has been associated with serious side effects including nausea, aggression, hallucinations, respiratory issues, withdrawal symptoms, and in rare cases, death. Do not use if you have a medical condition, take prescription medication, or use opioids or illicit substances. Do not use if you are pregnant, nursing, may become pregnant, or have a history of substance abuse. Combining this product with alcohol, medications, or other drugs may result in dangerous interactions, including respiratory depression or death.

Effects may take up to 90 minutes to appear and may cause drowsiness or impairment. Do not drive or operate heavy machinery. Discontinue use and seek medical attention if any adverse effects occur. Keep out of reach of children. Possession or use is illegal for individuals under 21 years of age. This product has not been evaluated by the Food and Drug Administration and is not intended to diagnose, treat, cure, or prevent any disease.