The olive leaf contains a wide phenolic profile, of which the major elements are shown below:
- Caffeic acid
- Vanillic acid
The two most prominent biophenols found in olive leaf extract are oleuropein and hydroxytyrosol.1
- Vogel P, Machado I, Garavaglia J, et al. Polyphenol benefits of olive leaf (Olea europaea L.) to human health. Nutr Hosp. 2015;31(3):1427–33.