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Anxiety Relief & Anxiolysis

How Kava naturally alleviates anxiety – Mechanisms of action, studies, and recommended varieties.

Brief & Concise

Kava zeigt in klinischen Studien signifikante anxiolytische Wirkung. Es reduziert Angstsymptome vergleichbar mit Benzodiazepinen, jedoch ohne Abhängigkeitspotenzial.

The anxiolytic effect (anxiolysis) is the best-documented and scientifically studied property of Kava. For millennia, the peoples of the Pacific have used the plant to find inner peace – and modern research confirms this traditional use.

In contrast to pharmaceutical anxiolytics like benzodiazepines, Kava works without cognitive impairments. The mind remains clear and focused while tension and worries dissolve. This unique state is often described as "alert relaxation" or "active calmness."

Mechanism of Action

The anxiolytic effect of Kava is based on a complex interplay of several neurobiological mechanisms. At the center is the modulation of the GABA system, but other neurotransmitter systems are also involved.

The GABA System

GABA (Gamma-Aminobutyric acid) is the most important inhibitory neurotransmitter in the brain. When GABA binds to its receptor, a chloride channel opens, negative ions flow into the nerve cell, and it becomes less excitable. The result: Calmness, relaxation, anxiety relief.

The Process of GABA Modulation

  1. 1. Kavalactone (e.g., Kavain) reaches the brain via the bloodstream
  2. 2. Binding to the GABA-A receptor on nerve cells (at a different site than benzodiazepines)
  3. 3. Opening of the chloride channel → increased influx of Cl⁻ ions
  4. 4. Neuronal hyperpolarization → the excitability of the neuron decreases
  5. 5. Noticeable effect: Calmness, anxiety relief, muscular relaxation

The crucial difference from benzodiazepines: Kavalactones bind at a different site on the GABA-A receptor. This explains why Kava does not cause dependence and does not impair cognitive functions.

Additional Mechanisms

Sodium/Calcium Channel Blockade

Kavalactones block voltage-dependent sodium and calcium channels. This reduces the excitability of nerve cells and contributes to the calming effect. This mechanism is also responsible for the anticonvulsive effect.

MAO-B Inhibition

Some Kavalactones (especially Desmethoxyyangonin) inhibit the enzyme monoamine oxidase-B. This slows down the breakdown of dopamine and contributes to the mood-enhancing effect – without the risks of classical MAO inhibitors.

Norepinephrine Reuptake Inhibition

The inhibition of norepinephrine reuptake contributes to enhanced concentration without causing nervousness. This explains the "alert relaxation" that distinguishes Kava from sedative substances.

CB1 Receptor Affinity

Yangonin shows a proven affinity for the CB1 receptor of the endocannabinoid system. This explains the slightly euphoric component of Kava's effect.

Scientific Studies

The anxiolytic effect of Kava is supported by numerous clinical studies. A Cochrane meta-analysis from 2003 (updated in 2018) summarized the results and reached a positive conclusion.

Key Study Results

  • Cochrane Review (Pittler & Ernst, 2003): Analysis of 11 randomized controlled trials with a total of 645 participants. Kava showed a significant superiority over placebo in the treatment of anxiety disorders.
  • Sarris et al. (2013): Double-blind, placebo-controlled study with 75 participants with generalized anxiety disorder. Kava extract (120-240 mg Kavalactones/day) led to a significant reduction in anxiety symptoms.
  • Lehrl (2004): Comparative study between Kava and Oxazepam (benzodiazepine). Both showed comparable anxiolytic effects, but Kava without cognitive impairment.
"The evidence for Kava is particularly strong in the area of anxiety relief. Studies show a reduction in physiological stress markers (e.g., heart rate, cortisol) after taking Kava extracts or traditional beverages."
— Kava – Root of Calm

Kava vs. Benzodiazepines

The comparison between Kava and benzodiazepines is particularly enlightening, as both act on the GABA system but with very different outcomes.

PropertyKavaBenzodiazepines
Anxiolytic EffectStrong, but gentleVery strong
Cognitive FunctionMaintained or improvedImpaired
SedationLow to moderateStrong
Dependence PotentialVery lowHigh (after a few weeks)
Tolerance DevelopmentReverse ToleranceRapid Tolerance
Withdrawal SymptomsNone knownSevere, potentially dangerous
InteractionsLowNumerous

Advantages of Kava

  • No development of dependence even with prolonged use
  • Mental clarity remains intact – ideal for work and social situations
  • No "hangover" or rebound anxiety the next day
  • Can be taken as needed without developing tolerance
  • Natural product with millennia-old tradition

Recommended Chemotypes & Varieties

For the anxiolytic effect, varieties with a high Kavain content (position 4 in the chemotype) are particularly recommended. These "Heady" Kavas primarily act mentally and keep the mind clear.

HeadyIdeal for anxiety relief

Borogu (Vanuatu)

Chemotyp: 426531

Classic Noble Kava, balanced with a slight Heady tendency. Ideal for beginners.

Kelai (Vanuatu)

Chemotyp: 423165

Strongly anxiolytic, very popular. Clear, focused relaxation.

Melo Melo (Vanuatu)

Chemotyp: 463251

Heady with slight euphoria. Ideal for social situations.

Pouni Ono (Tonga)

Chemotyp: 426315

Mood-enhancing and anxiety-relieving. Premium quality.

Not Recommended for Anxiety Relief

Tudei Varieties (identified by DHM in position 1 or 2, e.g., chemotype 526431) are not suitable for anxiety treatment. They have strong sedative effects and can lead to fatigue the next day. Also, very "Heavy" varieties can be counterproductive when clarity is desired.

Practical Application

For the application in anxiety disorders, there are various strategies depending on whether it concerns acute situations or long-term support.

In Acute Anxiety

  • Dosage: 1-2 Shells (approx. 15-30g powder)
  • Preparation: Traditionally kneaded in water
  • Onset of Effect: 15-30 minutes
  • Variety: Heady Kava (e.g., Kelai, Borogu)
  • Tip: On an empty stomach for faster effect

For Daily Support

  • Dosage: 100-250 mg Kavalactones/day
  • Form: Traditional drink or capsules
  • Timing: Evening or as needed
  • Note: "Reverse Tolerance" – effect may increase over time
  • Break: 1-2 days per week recommended

Reverse Tolerance

A unique phenomenon with Kava: Unlike most psychoactive substances, the effect can become stronger with regular use, not weaker. Beginners often require higher doses, while experienced users can manage with less. This makes Kava a sustainable option for long-term anxiety management.

Continue in the chapter Effect:

Sleep & Relaxation

How Kava improves sleep and promotes deep relaxation

Based on studies by

Jerome Sarris

Western Sydney University, NICM Health Research Institute

View profile

With contributions from

This wiki is a curated resource that synthesizes research from peer-reviewed studies and expert researchers. It is not written by the researchers listed above, but rather based on their published work.

Scientific Sources

The information on this page is based on the following scientific studies and publications:

Kava extract for treating anxiety (Cochrane Review)

Pittler M.H., Ernst E. (2003) – Cochrane Database of Systematic Reviews

View study

Kava in the treatment of generalized anxiety disorder: a double-blind, randomized, placebo-controlled study

Sarris J., Stough C., Bousman C.A., Wahid Z.T., Murray G., Teschke R., Savage K.M., Stough C., Byrne G.J., Scholey A. (2013) – Journal of Affective Disorders

View study

Kava-Kava Extract LI 150 Is as Effective as Opipramol and Buspirone in Generalised Anxiety Disorder

Lehrl S. (2004) – Phytomedicine

View study

Therapeutic Potential of Kava in the Treatment of Anxiety Disorders

Singh Y.N., Singh N.N. (2002) – CNS Drugs

View study