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Olive leaf
Also called: Olea europaea, oleuropein
An extract from olive tree leaves, rich in an antioxidant called oleuropein. Small studies suggest it may help blood pressure and blood sugar.
Commonly used for
- Blood pressure support
- Blood sugar support
- Immune support
- Antioxidant support
Found naturally in
- Olive leaf tea
- Olives and extra virgin olive oil contain related compounds
Label red flags
- Oleuropein content not listed
Check with a provider
- Taking blood pressure medicine, since effects may add up
- Taking diabetes medicine, since it may lower blood sugar
- Pregnancy or breastfeeding: not well studied
- Allergy to olive tree pollen
Supplements that contain it
Brand nameProduct nameImmune formulasComing soon
Brand nameProduct nameBlood pressure and heart formulasComing soon
Brand nameProduct nameBlood sugar formulasComing soon
Brand nameProduct nameImmune formulasComing soon
Brand nameProduct nameBlood pressure and heart formulasComing soon
Brand nameProduct nameBlood sugar formulasComing soon
Parts of the body it affects
Explore what each area does and the conditions that can affect it.
Blood & immune system
Blood carries oxygen and nutrients, and white blood cells defend you from infection. In autoimmune disease, that defense system targets your own tissues.
Pancreas
Your pancreas makes digestive enzymes and the hormones insulin and glucagon, which keep blood sugar steady.
Illustrations: Servier Medical Art, CC BY 4.0
Wondering if your symptoms fit a pattern?
Dr. Lesher is a naturopathic doctor who specializes in women's autoimmune and chronic conditions. Since 2020, she has helped more than 900 patients overcome and heal from their conditions.