Pregnancy
Clinical references generally advise avoiding kava during pregnancy. Kava may increase uterine tone, and there isn't enough data on its potential effects on fetal development to establish that it's safe. This is worth being precise about: the recommendation to avoid kava during pregnancy reflects insufficient safety data and a plausible physiological concern, not confirmed evidence of harm. Given that uncertainty, and given how much is at stake, the standard, cautious clinical advice is to avoid kava while pregnant. This isn't medical advice, talk to your doctor about your specific situation.
Breastfeeding
Kava is known to pass into breast milk, and its effects on nursing infants haven't been well studied. Because of this, breastfeeding is generally listed alongside pregnancy as a reason to avoid kava. If you're breastfeeding and interested in resuming kava afterward, that's a reasonable conversation to have with your doctor once breastfeeding has ended.
Existing Liver Conditions
If you have any existing liver condition, talk to a doctor before drinking kava, given kava's history of liver-safety concerns, discussed in full in Kava and Liver Health. This applies even to properly sourced noble kava, since an existing liver condition changes the risk calculation regardless of how carefully the kava itself is sourced.
Before Surgery
Standard medical guidance recommends discontinuing kava at least two weeks before any scheduled surgery. This is due to kava's sedative properties and its potential to interact with anesthesia and other medications used during and after surgical procedures. If you have an upcoming surgery and currently drink kava, mention this to your surgical team well in advance.
Other Conditions Worth Mentioning to a Doctor
Parkinson's disease, any condition requiring medications that interact with kava (see Kava Interactions), and a history of depression are all worth discussing with a doctor before adding kava, since each carries its own specific considerations beyond what's covered here. None of this is medical advice, and this isn't an exhaustive list, if you have any ongoing health condition, the safest approach is asking your own doctor directly rather than relying on a general guide.
