Can you drive after drinking kava?

Kava affects individuals differently, and you should not drive if you feel any impairment. Treat it the way you would any substance with a relaxing effect: assess yourself honestly before getting behind the wheel, and don't drive if you're unsure.

What's known. Kava is not an intoxicant in the way alcohol is, and it doesn't produce the coordination loss associated with alcohol at comparable social doses. But kavalactones do have muscle-relaxant and sedative properties, and effects vary with dose, kavalactone concentration, whether you've eaten, and individual sensitivity.

Where the law sits. Kava is legal to buy and consume in the United States. It is not tested for in standard roadside screening. However, most jurisdictions have offences covering driving while impaired by any substance, not only alcohol and named drugs — so "not tested for" is not the same as "permitted regardless of state".

Don't drive if:

• You feel any drowsiness or heaviness
• You've had a higher-concentration extract or a large serving
• You've combined it with alcohol — see the entry on mixing kava and alcohol
• You've combined it with any sedating medication
• You're unsure

Effects typically peak 1–2 hours after drinking and run 2–4 hours in total. If you intend to drive later in an evening, that window is the one to plan around.

Kava is not a way to drink and drive. If your reason for choosing kava is being the person who can still get everyone home, the honest answer is to have a drink with no active compounds in it at all.