What Is Kava Tea? Benefits, Taste, Effects and Safety

What kava tea is, what it tastes like, its traditional uses for anxiety and sleep, and the safety concerns you should know before trying it.

Updated · 3 min read

Kava is a root-based drink from Polynesia and Micronesia, traditionally used as a social beverage and, more recently, marketed for its calming effects. It contains compounds called kavalactones that may help with relaxation, but kava also carries a real risk of liver damage, so it isn't something to use casually or long-term.

What Is Kava Tea?

Kava comes from an evergreen plant native to the South Pacific, a relative of the black pepper family. The root — not the leaves or seeds — contains kavalactones, mildly psychoactive compounds associated with anxiolytic (anxiety-reducing), analgesic and sedative effects.

Traditionally, the root is pounded and mixed with water or coconut milk to make a bitter, pasty drink, a preparation method that goes back roughly 2,000 years in Pacific Island culture. Today it's more often sold as tea, tincture or capsules, and most people who buy it are looking for help with anxiety, stress or occasional sleeplessness. How it's prepared and dosed matters a lot for both its effects and its safety.

What Does Kava Tea Taste Like?

Most people describe kava as earthy and bitter, with a slightly numbing effect on the tongue from its active compounds. Because of the strong flavor, it's commonly sweetened with honey, maple syrup or a bit of ginger.

Side Effects and Who Should Avoid It

Kava's safety profile is genuinely controversial. Various kava products have been linked to rare cases of liver injury, some of them serious or even fatal, and several countries — including the United Kingdom, Canada, France and Germany — have restricted or banned its sale at various points.

Researchers aren't certain why some kava products have been linked to liver problems while traditional, long-term use in the Pacific Islands hasn't shown the same pattern — differences in preparation, plant part used and other health habits of the people studied may all play a role. Because of this uncertainty, it's worth treating kava as a supplement with real risk rather than a routine wellness drink, and checking with a doctor before using it, especially regularly.

Avoid kava if you:

  • Have liver disease or a history of heavy alcohol use
  • Have Parkinson's disease, bipolar disorder or clinical depression
  • Have a bleeding disorder
  • Have lung disease, kidney disease or high blood pressure
  • Are pregnant or breastfeeding
  • Are a child
  • Need to drive or operate machinery (kava can cause drowsiness)

Avoid combining kava with:

  • Sedatives or sleep medications
  • Antidepressants, including MAOIs and tricyclics
  • Benzodiazepines
  • Diuretics or blood thinners
  • Antipsychotics or Parkinson's medications (such as levodopa)

If you take any prescription medication, talk to your doctor before trying kava — the interaction list above is not exhaustive.

Germany banned kava in 2002 over liver safety concerns, and other countries followed with restrictions of their own, even though traditional use over centuries hadn't produced widespread reports of liver damage. That gap is part of why the science on kava remains unsettled: modern extracts, dosing and quality control may differ significantly from traditional preparations.

If you do use kava, most safety guidance suggests staying well within the lower end of typical dosing, avoiding daily long-term use, and stopping if you notice any signs of liver trouble (yellowing skin or eyes, dark urine, unusual fatigue, or abdominal pain) — and seeing a doctor right away if you do.

FAQ

Is kava tea safe to drink every day?

Most safety guidance advises against long-term daily use because of the liver toxicity risk. It's generally recommended for occasional use over a limited period, not as a daily habit.

Can kava tea help with anxiety?

Some research and centuries of traditional use suggest kava may have a calming, anxiety-reducing effect, but it isn't a substitute for medical treatment of anxiety disorders, and it interacts with several common medications.

What does kava taste like without sweetener?

Bitter and earthy, with a mild numbing sensation on the tongue — most people find it more palatable with honey or a natural sweetener.

The Bottom Line

Kava tea has a long cultural history and some genuine calming properties, but the liver safety concerns are real and not fully understood. Use it occasionally rather than daily, avoid it if you're in any of the risk groups above, and check with a doctor first if you take any medication. If you're looking for a gentler, better-studied option for relaxation, see our guides to medicinal herbal teas and teas for better sleep, or browse our list of the healthiest herbal teas.

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