Is Kava Safe? Side Effects, Risks, and What the Science Says

By Chester Takau  |  June 2026

Yes. Noble kava, prepared the traditional way, is safe for most adults. I say this not as someone guessing from behind a screen but as a man who has drunk kava his entire life in Vanuatu. My father drank it. His father drank it. The men in my village drink it every evening, and they have for generations. The liver scare that swept through Europe and the US in the early 2000s has been largely debunked. Contamination and tudei kava were the culprits, not properly prepared noble kava. That distinction matters more than anything else you will read about kava safety.

"I have watched three generations of my family drink kava. Not one liver problem. Not one hospital visit. The plant was never the issue — the supply chain was."

The Liver Scare — What Actually Happened

Around 2002, Germany and several other European countries banned kava after a handful of liver injury cases were linked to kava supplements. The ban spread fast. Media ran with it. Kava, a plant that Pacific Islanders had consumed safely for over 3,000 years, suddenly had a reputation as dangerous.

But the story fell apart under scrutiny.

Later research, including Teschke's own revised analyses, found that many of the implicated products used tudei kava — a variety known to contain higher levels of potentially harmful flavokavains. Some products used stem peelings and leaves instead of the root, which is the only part traditionally consumed. Others were extracted with acetone or ethanol, not water. A few cases involved patients already taking hepatotoxic medications.

The 2016 WHO risk assessment of kava put it plainly: traditional aqueous preparations of noble kava have a long history of safe use. The problems arose from poor manufacturing practices and the wrong plant material. Germany quietly lifted its ban in 2015 after courts found the original evidence insufficient.

I remember hearing about the ban when I was younger. It made no sense to anyone in Vanuatu. We had been drinking kava for centuries with no epidemic of liver disease. The disconnect was not between kava and safety — it was between what Europeans were selling as "kava" and what we actually drink.

Traditional preparation versus commercial extraction — two very different products carrying the same name.

Known Side Effects

Kava is not side-effect free. Nothing is. But the side effects of noble kava prepared traditionally are mild and well-documented.

Kava dermopathy. Heavy daily drinkers sometimes develop dry, scaly skin, particularly on the palms, forearms, and shins. In Vanuatu, we call it kanikani. It looks alarming if you have never seen it. It is completely reversible — stop drinking for a week or two and the skin clears. I have had mild flaking on my hands during periods when I was drinking kava every single night. It went away.

Stomach sensitivity. Kava on an empty stomach can cause nausea in some people. This is why many kava bars recommend eating something light beforehand. The traditional approach in Vanuatu is actually the opposite — we drink on an empty stomach for stronger kava effects — but we have also been doing this since childhood. If you are new to kava, ease in.

Drowsiness. Kava is a relaxant. That is the point. But it means you should not drive after a heavy session, just as you would not drive after several beers. Common sense applies.

None of these side effects are dangerous. None are permanent. Compare them to the side effect profiles of prescription anti-anxiety medications, and kava looks remarkably gentle.

Who Should Avoid Kava

I am not a doctor, and this is not medical advice. Talk to your healthcare provider before adding kava to your routine, especially if any of the following apply to you.

Pre-existing liver conditions. If you have liver disease, hepatitis, or elevated liver enzymes, kava is not worth the risk. Even though noble kava has not been shown to cause liver damage in healthy people, a compromised liver changes the equation. Your doctor should be part of that decision.

Pregnancy and breastfeeding. There is not enough research to confirm safety during pregnancy or nursing. In Vanuatu, pregnant women traditionally avoid kava. That cultural practice lines up with the precautionary principle — when data is lacking, err on the side of caution.

Alcohol. Do not mix kava and alcohol. Both are processed by the liver, and combining them increases strain. This is one rule I am firm about. In my village, you drink kava or you drink alcohol. Never both on the same night.

Sedative medications. Benzodiazepines, sleep medications, certain antidepressants — kava can amplify their sedative effects. If you are on any medication that causes drowsiness, consult your prescriber before trying kava. The interaction is real, and it can be stronger than people expect.

"In my village, you drink kava or you drink alcohol. Never both. That rule has been around longer than any clinical trial."

Noble Kava vs Tudei — Why It Matters for Safety

This is the real safety conversation. Not "is kava safe" but "which kava are you drinking?"

Noble kava varieties — the ones cultivated across Vanuatu, Fiji, Tonga, and Samoa for centuries — have a documented track record of safe traditional use. They produce the calm, clear-headed relaxation people seek. Tudei kava (the name comes from "two-day" because the hangover can last that long) contains higher concentrations of flavokavains and different kavalactone ratios. It hits harder, feels heavier, and carries more risk.

The liver cases from the early 2000s? Many traced back to products containing tudei kava or aerial plant parts. The noble kava vs tudei distinction is not marketing — it is the single most important factor in kava safety.

In Vanuatu, we know which varieties are noble. We grow them. We name them. Tudei kava exists on the islands, but experienced drinkers avoid it for daily use. The problem is that when kava went global, not everyone selling it understood or cared about this distinction.

How to Drink Kava Safely

If you want to try kava or already drink it, these guidelines will keep you on solid ground.

Buy from reputable vendors. Look for sellers who specify the kava variety by name, source from known growing regions, and can tell you whether the product is noble. If a vendor cannot answer these questions, move on.

Stick to noble varieties. Borogu, Borongoru, Melomelo, Palarasul — these are names you will see from Vanuatu. Waka and Lawena from Fiji. If the product just says "kava" with no variety information, that is a red flag.

Prepare it traditionally. Water extraction. Strain the root powder through a mesh bag, knead it, drink the liquid. This is how Pacific Islanders have consumed kava for millennia, and it is the preparation method the WHO assessed as safe.

Do not mix with alcohol or sedatives. I have said it already. It bears repeating.

Moderate your use. Kava every night is normal in Vanuatu, but we also take breaks. Listen to your body. If your skin starts flaking, ease off for a few days. If you are using kava to manage anxiety or help with sleep, consider combining it with other approaches — natural sleep aids or meditation for anxiety can complement kava without adding risk.

Get regular checkups. If you drink kava frequently, mention it to your doctor. A simple liver function test once a year gives you peace of mind and data. I do this myself.

Last month, I sat in a nakamal in Port Vila and watched a tourist refuse a shell of kava because he had read online that it "destroys your liver." The man next to me — seventy-two years old, sharp-eyed, drinking his evening kava the same way he has every night for fifty years — just smiled and took another sip. The science caught up to what we always knew. Noble kava, prepared properly, shared in community — it was never the problem. The fear was built on bad products and incomplete data. The plant itself has always been safe.

About the Author: Chester Takau grew up drinking kava in Vanuatu and has decades of personal experience with traditional kava culture. He writes about kava from a place of lived knowledge, not secondhand research.

Disclaimer: This article reflects personal experience and publicly available research. It is not medical advice. Consult a qualified healthcare provider before using kava, especially if you have pre-existing health conditions or take medication.