Who should not take olive leaf extract?

Olive leaf extract should not be taken by pregnant or breastfeeding women, children, or people with certain medical conditions such as diabetes, high blood pressure, kidney disease, and bleeding disorders. People taking medications should also consult with a healthcare professional before taking olive leaf extract, as it can interact with certain medications. Additionally, olive leaf extract should be taken in moderation, as it can have side effects such as nausea, vomiting, and an allergic reaction.