Thujone Safety: Key Facts and Practical Tips

You’ve probably heard thujone mentioned with absinthe, essential oils, or herbal supplements. It adds a nice scent, but too much can cause trouble. Below are the basics you need to stay safe, whether you’re buying a small bottle of oil or adding a dash to a home remedy.

How Much Thujone Is Safe?

EU rules cap thujone at 35 mg per kilogram of alcohol for drinks, and the US limits it to under 10 ppm in food flavorings. For essential oils, keep the skin concentration below 2 % – a few drops diluted in a carrier oil are enough.

Oral supplements usually max out at 10 mg per day. Doses above 20 mg can affect GABA receptors, leading to jitteriness, headaches, or worse. Always check the label for "thujone content" and compare it to these limits. If the label is vague, look for a lab‑tested certificate or choose a brand that follows EU or FDA guidelines.

Recognizing and Managing Side Effects

Even within safe limits some people notice mild dizziness, faster heartbeat, or trouble sleeping. Stop using the product for at least 24 hours and see if symptoms fade. Rarely, high doses cause muscle twitches, confusion, or seizures – those are emergencies.

The safest approach is to start low and go slow. Begin with half the suggested dose and watch how you feel for a day or two. Keep a short journal of any symptoms; it helps you spot patterns and adjust the amount.

If you’re pregnant, nursing, or taking medication that affects the nervous system, skip thujone unless a doctor approves.

Store thujone‑containing products out of reach of kids and pets. Keep bottles sealed, away from sunlight, and in a cool place to avoid breakdown into more harmful by‑products.

When shopping online, stick to reputable pharmacies or retailers that verify their oil sources. Look for reviews mentioning "lab tested" or a "certificate of analysis." If a price looks too good to be true, it probably is, and the product may contain contaminants or higher thujone levels than advertised.

In short, thujone is safe when you respect dosage limits, choose quality products, and listen to your body. Stick to 10 mg per day for oral use, keep oil concentrations under 2 % on skin, and never exceed legal limits in food or drinks. Follow these steps and you can enjoy thujone’s flavor and potential benefits without risking your health.

Alan Gervasi 0 23 Sep 2025

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