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Medically reviewed by Last updated on Jul 20, 2023.

What are other common names?

  • Mitragyna speciosa Korth
  • Mitragyna speciosa
  • Nauclea speciosa
  • Biak
  • Biak-Biak
  • Cratom
  • Gratom
  • Herbal Speedball
  • Ithang
  • Kakuam
  • Katawn
  • Kedemba
  • Ketum
  • Krathom
  • Kraton
  • Kratum
  • Madat
  • Maeng Da Leaf
  • Mambog
  • Mitragynine Extract
  • Nauclea
  • Thang
  • Thom

What is this product used for?

No information from medical studies supports the use of this product for any health problem.

What are the precautions when taking this product?

  • Always check with your doctor before you use a natural product. Some products may not mix well with drugs or other natural products.

  • Very bad reactions and even death may occur if you take kratom with other drugs. This includes medicines, other herbal products, caffeine, or illegal drugs.

  • Do not use this product if you are pregnant or plan to become pregnant soon. Use birth control you can trust while taking this product.

  • Do not use this product if you are breastfeeding.

  • This product may cause you to be sleepy. Take extra care driving and doing tasks where you need to be alert.

  • You may have signs of physical dependence or withdrawal if you take this product for a period of time and then stop.

  • Be sure to tell you doctor that you take this product if you are scheduled for surgery or tests.

  • Your skin may be extra sensitive to the sun. Always wear sunblock when outside.

  • Avoid alcohol (includes wine, beer, and liquor) while taking this product

  • Take extra care and check with your doctor if you have:

    • Liver problems

    • Mental health problems

What should I watch for?

  • Skin darkening on face and cheeks

  • Itching

  • Sweating

  • Dry mouth

  • Upset stomach

  • Loose stools or diarrhea

  • Constipation

  • Passing more urine than normal

  • Feeling uncomfortable or unhappy

  • Feeling like you are in a dream or not connected to things around you

  • Seeing things that are not really there

When do I need to call the doctor?

  • Signs of a very bad reaction. These include wheezing; chest tightness; fever; itching; bad cough; blue skin color; seizures; or swelling of face, lips, tongue, or throat. Go to the ER right away.

  • Signs of liver problems like upset stomach or throwing up, belly pain, feeling tired, dark urine, yellow skin or eyes, not hungry.

  • Signs of withdrawal like muscle aches, not able to sleep, mood changes, angry towards other people, runny nose, yawning, or jerky movements.

Where can I learn more?

National Institute on Drug Abuse

Last Reviewed Date


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