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Medically Reviewed

What is Kava? Side Effects and Dangers

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Medically Reviewed: December 10, 2025

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All of the information on this page has been reviewed and verified by a certified addiction professional.

What is Kava? Side Effects and Dangers

Alcohol alternatives are gaining popularity as more people attempt to cut back on drinking. Kava is often advertised as a natural alternative to drinking–but is it good for you?

Kava abuse can have unwanted side effects and risks. This article will outline the effects and dangers of kava abuse. You will learn:

  • What kava is
  • Kava’s side effects
  • The dangers of kava abuse
  • The potential for kava addiction
  • How to recognize kava abuse
  • Where to find substance abuse treatment

If you or someone you love struggles with substance abuse or addiction, you are not alone. Contact the specialists at PAX Memphis to learn about our programs or to schedule an intake appointment.

What is Kava?

Kava piper methysticum (known as kava or kava-kava) is an herbal substance known for its calming and sedative effects. Traditionally, kava has been used by people in the South Pacific Islands for hundreds of years as part of medicinal or religious ceremonies. People typically consume a kava drink that contains the root’s extracts.

It is legal to sell, own, and use kava in the United States. Manufacturers and retailers may market kava products as dietary supplements. People may use kava plant products to reduce anxiety, promote muscle relaxation, or help with sleep.

However, products containing kava extract may cause unwanted or dangerous side effects, including liver injury. It is critical to be aware of the risks of kava products so you can make informed choices about using them.

The Side Effects and Risks of Kava

People typically consume kava as a drink or oral capsule. There are many kava products on the market, including:

  • Drink mixes
  • Edibles (food products containing kava)
  • Concentrated liquids
  • Tinctures

Like other dietary supplements, the Food and Drug Administration (FDA) does not regulate kava production or sales. It can be challenging to determine how much kava a supplement contains. The recommended dose in the United States is between 60 and 250 milligrams. However, traditional doses may be as high as 8,000 milligrams.

Regardless of the dose, kava can have a range of side effects, including:

  • Euphoria
  • Drowsiness
  • Increased sociability
  • Reduced stress
  • Relaxation
  • Psychoactive effects

Some people may experience unwanted or adverse short-term effects, including:

  • Nausea
  • Vomiting
  • GI discomfort
  • Headaches

In some cases, people may experience excessive drowsiness while using kava. Kava users must avoid driving or operating other equipment while under the effects of this substance.

While higher doses are associated with adverse effects, anyone can experience them when using kava.

Long-Term Effects of Kava Abuse

Research suggests that kava abuse can have long-term, dangerous consequences. Some of the potential long-term dangers of kava use include:

  • Liver damage
  • Irritation
  • Kidney damage
  • Hallucinations
  • Increased risk of accidents or injuries
  • Stomach lining irritation
  • Breathing problems

Kava can also interact with other medications or alcohol. Combining kava and other substances can cause liver toxicity, which can be fatal.

It is important to recognize kava abuse and stop taking it right away. Seek treatment if you cannot stop using kava on your own. Treatment programs can help you explore and address the roots of your substance abuse and move forward.

Is Kava Addictive?

Some people may use kava to treat anxiety, sleeplessness, or other problems. Some may wonder if it is possible to develop an addiction to kava after long-term or heavy use.

The short answer is that it isn’t possible to become physically dependent on kava. However, people who use it for long periods may develop psychological dependence.

Psychological dependence occurs when someone believes that they cannot function without using a substance. Some signs of dependence include:

  • Feeling anxious about running out of a substance
  • Doing illegal, dishonest, or dangerous things to get more of a substance
  • Continuing to use a substance even when it causes problems
  • Isolating or avoiding situations where you can’t use a substance
  • Having cravings for a substance
  • Neglecting self-care, responsibilities, or relationships

Some people find it very hard to stop using kava when they want to. Substance abuse treatment programs can help people stop using kava or other substances and work toward a healthier future.

Treating Kava Addiction

While it’s not possible to become physically addicted to kava, people may develop psychological dependence if they use it frequently. It may be hard for people to stop taking kava when they choose to.

Substance abuse treatment programs provide structure, support, and education that can help people address the roots of their substance use. Treatment programs can include:

  • Medical detox programs
  • Behavioral therapies
  • Relapse prevention education
  • Individual, group, and family counseling
  • Holistic therapies, like mindfulness, exercise, and nutrition support
  • Coping skills
  • Aftercare planning and support

People with kava addiction can benefit from getting treatment and ongoing support to address substance abuse.

Find Treatment Now

If you or a loved one abuses kava or other substances, you are not alone. Find compassionate, comprehensive addiction treatment programs at PAX Memphis. Contact our intake specialists to learn about our treatment center or to schedule an intake appointment.

References:

  1. National Institute of Health (NIH): An Updated Review on the Psychoactive, Toxic and Anticancer Properties of Kava
  2. NIH: Kava as a Clinical Nutrient: Promises and Challenges
  3. Science Direct: Kava