Multisolvent heatless extraction of Kratom

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  • Kratom contains a variety of alkaloids that are soluble in both polar solvents (water) and non-polar solvents (isopropyl alcohol, Everclear, etc). This extraction attempts to yield as many of the psychoactive substances in kratom as possible.
  • The acetic acid will provide a polar solvent (95% water after all) and the lower pH will aid in extraction.
  • The nonpolar solvent of choice will capture all of the psychoactive chemicals such as indole alkaloids and partial mu opioid agonists. All the good stuff.


This picture shows the drying process, I simply place my pyrex trays next to a screen door in the sun and let the solvent evaporate off. Note the dark color and the difference in drying states.
  • Throw the raw kratom powder in the freezer for about an hour. Freezing it expands the plant cells, causing them to burst and creates more surface area for the solvent to extract the alkaloids from.


  • White Vinegar (acetic acid, lemon juice works as well but is less sterile)
  • 99% Isopropyl alcohol or your nonpolar solvent of choice
  • A large, glass, airtight, mason jar.
  • Pyrex glassware for evaporating off the solvent after extraction. A large, shallow, lasagna glass Pyrex pan is perfect.
  • Tools to scrape the resulting extract
  • Time! This takes at least a week from start to finish
  • Raw kratom powder, of course.


This picture shows the final product in the form of a powdery extract.
  1. Spoon the raw kratom powder into the mason jar. Fill it up to about 1/3 - 1/2 the jar level.
  2. Slowly add the vinegar or aqueous acid solution to the raw powder. It is important that this step is performed first. Stir the vinegar into the powder. The powder is so powdery it seems to resist getting wet by the vinegar. Use enough vinegar to completely saturate the kratom, but not too much so that it creates a soupy solution.
  3. Let this acid-kratom mixture sit for an hour.
  4. Add the isopropyl alcohol or nonpolar solvent of choice. Stir vigorously, make sure every particle of kratom comes into contact with this solvent.
  5. This is where patience comes in. I don't like to heat alcohol solutions without a vent hood, so I let good old father time do the extraction for me. Let this mixture sit for at least 2 days. Agitate daily.
  6. After you've waited 2-4 days, decant off the kratom-alkaloid containing kratom that has now separated as the top layer of material in the mason jar. Decant this solution into a prepared pyrex pan.
  7. Wait X amount of hours for the nonpolar solvent to evaporate off. Once again, I abstain from using heat and just wait. The more surface area, the faster the evaporation. The higher the temperature, the faster the evaporation. The thicker the layer of solvent, the slower the evaporation is.
  8. Once you can drag your finger across the pyrex containing the kratom extract, it is ready. You don't want to ingest any isopropyl alcohol. Scrape this off of the pan. It will most likely be a thin layer of very dark brown crystalline material. It may be powdery depending on how thick you made the decanted solution layer in step 6.

All done!


I like to make a custom blend of 1/3 raw kratom powder and 2/3 extract to place in gel caps. It reduces the amount of kratom you have to take to feel its effects dramatically.

My last extraction provided a 17% total recovery, by mass. But the point of this extract is not to enhance kratom, just to lower the amount needed for effects. One can take .5gs of this extract instead of 4gs of raw kratom powder. This extract can help immensely in helping alleviate the symptoms of opiate withdrawal, yet is still addictive itself.

This is the 1/3 raw powder, 2/3 extract mixture I create. I place this into gel caps. Only 1g of this mixture is needed to feel the effects of 3-4g of kratom powder.

See also