Omnia SanaPlant Comparison
Witch Hazel vs Olive
A side-by-side comparison of two medicinal plants — every documented constituent, action, use, safety note and cited source, assembled automatically from the Omnia Sana database.
At a glance
Witch Hazel and Olive: they share 5 indicated uses (arthritis / joint pain, cancer (anticancer research), inflammation (general), …); 3 pharmacological actions in common.
Evidence face-off — shared uses
| Condition | Witch Hazel | Olive | Verdict |
|---|---|---|---|
| Arthritis / joint pain | 5/10 | 5/10 | Comparable evidence |
| Cancer (anticancer research) | 2/10 | 2/10 | Comparable evidence |
| Inflammation (general) | 5/10 | 5/10 | Comparable evidence |
| Skin irritation | 5/10 | 5/10 | Comparable evidence |
| Wounds | 1/10 | 5/10 | Stronger for Olive |
Evidence scores (1–10) are computed from the tier of each cited source. “Comparable” means the two scores are within one point. Follow a score to its detailed sources.
Key Constituents
The principal astringent and anti-inflammatory constituents.
Antioxidant and anti-inflammatory constituents of the bark and leaf.
The principal bioactive phenolics of the leaf, responsible for most of its antioxidant, anti-inflammatory and antihypertensive activity.
Antioxidant flavonoids of the leaf.
Pentacyclic triterpenes of the leaf cuticle and fruit skin, studied for anti-inflammatory and metabolic effects.
The dominant fatty acid of the fruit oil, a key component of the Mediterranean-diet lipid profile.
Pharmacological Actions
Anti-inflammatory and antioxidant (supports irritated/atopic skin); Relief of haemorrhoid symptoms (astringent and anti-inflammatory)
Astringent for skin irritation and minor inflammation of the skin and oral mucosa (tannins), applied topically; Relief of haemorrhoid symptoms (astringent and anti-inflammatory)
Traditional & Indicated Uses
inferred from anti-inflammatory action
Vulnerary for minor wounds, bruises and insect bites
inferred from anticancer action
Relief of haemorrhoid symptoms (astringent and anti-inflammatory)
Astringent for skin irritation and minor inflammation of the skin and oral mucosa (tannins), applied topically
Astringent for skin irritation and minor inflammation of the skin and oral mucosa (tannins), applied topically
Astringent for skin irritation and minor inflammation of the skin and oral mucosa (tannins), applied topically
inferred from anti-inflammatory action
inferred from antidiabetic action
inferred from anticancer action
inferred from antimicrobial action
inferred from anti-inflammatory action
inferred from antidiabetic action
inferred from anti-inflammatory action
Safety, Cautions & Contraindications
For topical use. Do not apply to deep wounds, serious burns or severe rectal bleeding - these need medical care.
Olive leaf extract may lower blood pressure; use caution if already on antihypertensive medication. May have mild hypoglycaemic effects. Olive oil is safe for dietary use. Rare olive pollen allergy. Well tolerated in normal culinary and supplement doses.
Duke (2002) includes olive leaf as ++ and notes hypotensive, hypoglycemic, ACE inhibitor-like, and antioxidant activities at the experimental level (score 1). Olive leaf extract (containing oleuropein) has demonstrated blood pressure-lowering and antiarrhythmic effects consistent with clinical support (PHR). Duke notes that traditional Mediterranean use for both the leaf and fruit is food-grade and safe. Olive leaf preparations are used as mild antihypertensives in European phytotherapy. No significant adverse effects are reported at standard herbal doses (Duke, 2002).
External Ids
Botanical Description
Large, multi-stemmed deciduous shrub or small tree with broad, oval, wavy-toothed leaves, asymmetrical at the base. Unusually, it flowers in late autumn to winter after the leaves have fallen, bearing clusters of small, spidery, bright yellow flowers with narrow, crinkled, ribbon-like petals. The woody seed capsule matures the following autumn and explosively ejects its seeds ('snapping hazelnut').[14]
Evergreen tree (Oleaceae), typically 3-15 m tall, often gnarled and long-lived, with some specimens surviving for centuries. Leaves are narrow, leathery, lance-shaped, dark green above and silvery-grey beneath. Small, fragrant, creamy-white four-lobed flowers are borne in axillary clusters, followed by a fleshy drupe (the olive) that ripens from green to purple-black.[1]
Habitat
Native to woodland understorey and forest margins of eastern North America; widely cultivated as an ornamental and medicinal shrub.[14]
Native to the Mediterranean basin, the Near East and parts of Africa, and cultivated for millennia across Mediterranean-type climates worldwide (warm, dry summers and mild winters); tolerates poor, rocky, calcareous soils and drought.[1]
Harvesting
Bark is stripped from branches (not the main trunk, to avoid harming the plant) and leaves are picked in summer; both are dried for use, or steam-distilled together with twigs to produce distilled witch-hazel water, the most common commercial form.[14]
Leaves can be harvested year-round from pruned or fallen branches, generally at their highest oleuropein content in late autumn and winter; fruit is hand- or machine-harvested from early autumn (green olives) through winter (fully ripe black olives), depending on the intended product.[10]
Traditional Uses
Witch hazel has a long Native American and, after adoption by European settlers, worldwide reputation as a topical astringent and anti-inflammatory remedy for skin irritation, minor wounds, bruises, insect bites and haemorrhoids, and as a soothing wash for irritated skin and mucous membranes.[14]
Olive leaf and fruit have a long Mediterranean tradition as a tonic, antipyretic and mild antihypertensive remedy, and olive oil is the foundation fat of the traditional Mediterranean diet, long associated with cardiovascular health. Modern research on oleuropein and other leaf polyphenols supports antioxidant, anti-inflammatory, antimicrobial, blood-pressure-lowering and insulin-sensitising effects consistent with these traditional and dietary uses.[1, 4, 7]
Preparations
Dosage
The EU herbal monograph on Hamamelis virginiana L., cortex gives, for cutaneous use, tincture at a strength corresponding to 5-10% in semi-solid preparations several times daily, or a dry extract (5-7.7:1, ethanol 30% m/m) at a strength corresponding to 1.3% as an ointment several times daily; for anorectal use, a decoction of 5-10 g per 250 mL up to 3 times daily as impregnated dressings. For topical use only. Educational reference only, not a prescription.
A meta-analysis of trials for blood pressure used around 500 mg/day of standardised olive leaf extract. Educational reference only, not a prescription; culinary olive oil and leaf tea are considered food-safe at normal dietary amounts.
References
Lookalikes Review
Drug Class Interactions
Not documented
Pairings
Not documented
Olive leaf and black seed (Nigella sativa) can each mildly lower blood pressure, so taking them together — especially alongside blood-pressure medicines — may add up and lower blood pressure more than expected. Monitor your blood pressure.[11, 18]
References & Sources
- Skowrońska, W., Pawłowska, K.A., Obrębski, M., Piwowarski, J.P. et al (2025) 'Chemical composition, skin microbiota metabolism, antimicrobial potential and anti-inflammatory properties of witch hazel bark (Hamamelis virginiana L.)', Journal of Ethnopharmacology, 353(Pt B), pp. 120433. doi:10.1016/j.jep.2025.120433 Preclinical
https://doi.org/10.1016/j.jep.2025.120433 - Piazza, S., Martinelli, G., Vrhovsek, U., Masuero, D. et al (2022) 'Anti-Inflammatory and Anti-Acne Effects of Hamamelis virginiana Bark in Human Keratinocytes', Antioxidants (Basel), 11(6), pp. 1119. doi:10.3390/antiox11061119 Preclinical
https://doi.org/10.3390/antiox11061119 - Janarthanam, V.A., Rajan, P.S.S., Panda, S.P., Panigrahy, U.P. et al (2025) 'Hamamelitannin from Hamamelis virginiana Attenuates Ethanol-Induced Oxidative and Inflammatory Responses in Danio rerio Larvae', Molecular Biotechnology, 68(5), pp. 2369-2385. doi:10.1007/s12033-025-01502-9 Preclinical
https://doi.org/10.1007/s12033-025-01502-9 - Piazza, S., Martinelli, G., Magnavacca, A., Fumagalli, M., Pozzoli, C., Terno, M., Canilli, L., Angarano, M., Maranta, N., Dell'Agli, M. and Sangiovanni, E (2022) 'Unveiling the Ability of Witch Hazel (Hamamelis virginiana L.) Bark Extract to Impair Keratinocyte Inflammatory Cascade Typical of Atopic Eczema', International Journal of Molecular Sciences, 23(16), pp. 9279. doi:10.3390/ijms23169279 Preclinical
https://doi.org/10.3390/ijms23169279 - Amendola, I., Viegas, D.J., Freitas, E.T., Oliveira, J.R., Santos, J.G., Oliveira, F.E., Lagareiro Netto, A.A., Marcucci, M.C., Oliveira, L.D. and Back-Brito, G.N (2024) 'Hamamelis virginiana L. extract presents antimicrobial and antibiofilm effects, absence of cytotoxicity, anti-inflammatory action, and potential to fight infections through the nitric oxide production by macrophages', Anais da Academia Brasileira de Ciencias, 96(1), pp. e20200031. doi:10.1590/0001-3765202320200031 Preclinical
https://doi.org/10.1590/0001-3765202320200031 - Habtemariam, S (2002) 'Hamamelitannin from Hamamelis virginiana inhibits the tumour necrosis factor-alpha (TNF)-induced endothelial cell death in vitro', Toxicon, 40(1), pp. 83-88. doi:10.1016/s0041-0101(01)00195-7 Preclinical
https://doi.org/10.1016/s0041-0101(01)00195-7 - Natella, F., Guantario, B., Ambra, R., Ranaldi, G., Intorre, F., Burki, C. and Canali, R (2021) 'Human Metabolites of Hamamelis virginiana (Extract) Modulate Fibroblast Extracellular Matrix Components in Response to UV-A Irradiation', Frontiers in Pharmacology, 12, pp. 747638. doi:10.3389/fphar.2021.747638 Randomized trial
https://doi.org/10.3389/fphar.2021.747638 - Dauer, A., Rimpler, H. and Hensel, A (2003) 'Polymeric proanthocyanidins from the bark of Hamamelis virginiana', Planta Medica, 69(1), pp. 89-91. doi:10.1055/s-2003-37022 Preclinical
https://doi.org/10.1055/s-2003-37022 - Vennat, B., Pourrat, H., Pouget, M.P., Gross, D. and Pourrat, A (1988) 'Tannins from Hamamelis virginiana: identification of proanthocyanidins and hamamelitannin quantification in leaf, bark, and stem extracts', Planta Medica, 54(5), pp. 454-457. doi:10.1055/s-2006-962499 Preclinical
https://doi.org/10.1055/s-2006-962499 - Duckstein, S.M., Lorenz, P. and Stintzing, F.C (2012) 'Conversion of phenolic constituents in aqueous Hamamelis virginiana leaf extracts during fermentation', Phytochemical Analysis, 23(6), pp. 588-597. doi:10.1002/pca.2359 Preclinical
https://doi.org/10.1002/pca.2359 - Sanchez-Tena, S., Fernandez-Cachon, M.L., Carreras, A., Mateos-Martin, M.L., Costoya, N., Moyer, M.P., Nunez, M.J., Torres, J.L. and Cascante, M (2012) 'Hamamelitannin from witch hazel (Hamamelis virginiana) displays specific cytotoxic activity against colon cancer cells', Journal of Natural Products, 75(1), pp. 26-33. doi:10.1021/np200426k Preclinical
https://doi.org/10.1021/np200426k - Theisen, L.L., Erdelmeier, C.A.J., Spoden, G.A., Boukhallouk, F., Sausy, A., Florin, L. and Muller, C.P (2014) 'Tannins from Hamamelis virginiana bark extract: characterization and improvement of the antiviral efficacy against influenza A virus and human papillomavirus', PLoS One, 9(1), pp. e88062. doi:10.1371/journal.pone.0088062 Preclinical
https://doi.org/10.1371/journal.pone.0088062 - Cheesman, M.J., Alcorn, S.R., White, A. and Cock, I.E (2023) 'Hamamelis virginiana L. Leaf Extracts Inhibit the Growth of Antibiotic-Resistant Gram-Positive and Gram-Negative Bacteria', Antibiotics, 12(7), pp. 1195. doi:10.3390/antibiotics12071195 Preclinical
https://doi.org/10.3390/antibiotics12071195 - European Medicines Agency (HMPC) (n.d.) 'European Union herbal monograph on Hamamelis virginiana L., cortex/folium/aqua (Hamamelidis cortex)'. Available at: https://www.ema.europa.eu/en/medicines/herbal/hamamelidis-cortex Traditional / reference
https://www.ema.europa.eu/en/medicines/herbal/hamamelidis-cortex - (2025) 'Hamamelis virginiana L. in Skin Care: A Review of Its Pharmacological Properties and Cosmetological Applications', Molecules. doi:10.3390/molecules30132744 Randomized trial
https://doi.org/10.3390/molecules30132744 - Herbal Reality (n.d.) 'Witch Hazel (Hamamelis virginiana): Benefits, Safety, Uses'. Available at: https://www.herbalreality.com/herb/witch-hazel/ Traditional / reference
https://www.herbalreality.com/herb/witch-hazel/
- Omar, S.H., Kerr, P.G., Scott, C.J., Hamlin, A.S. and others (2017) 'Olive (Olea europaea L.) Biophenols: A Nutriceutical against Oxidative Stress in SH-SY5Y Cells', Molecules, 22(11), pp. 1858. doi:10.3390/molecules22111858 Preclinical
https://doi.org/10.3390/molecules22111858 - Ruzzolini, J., Peppicelli, S., Andreucci, E., Bianchini, F. and others (2018) 'Oleuropein, the Main Polyphenol of Olea europaea Leaf Extract, Has an Anti-Cancer Effect on Human BRAF Melanoma Cells and Potentiates the Cytotoxicity of Current Chemotherapies', Nutrients, 10(12), pp. 1950. doi:10.3390/nu10121950 Preclinical
https://doi.org/10.3390/nu10121950 - Al-Rimawi, F., Sbeih, M., Amayreh, M., Rahhal, B. and others (2024) 'Evaluation of the antibacterial and antifungal properties of oleuropein, Olea europaea leaf extract, and Thymus vulgaris oil', BMC Complementary Medicine and Therapies, 24(1), pp. 297. doi:10.1186/s12906-024-04596-x Preclinical
https://doi.org/10.1186/s12906-024-04596-x - Qabaha, K., Al-Rimawi, F., Qasem, A. and Naser, S.A (2018) 'Oleuropein Is Responsible for the Major Anti-Inflammatory Effects of Olive Leaf Extract', Journal of Medicinal Food, 21(3), pp. 302-305. doi:10.1089/jmf.2017.0070 Preclinical
https://doi.org/10.1089/jmf.2017.0070 - Pang, K.L., Lumintang, J.N. and Chin, K.Y (2021) 'Thyroid-Modulating Activities of Olive and Its Polyphenols: A Systematic Review', Nutrients, 13(2), pp. 529. doi:10.3390/nu13020529 Meta-analysis / review
https://doi.org/10.3390/nu13020529 - Kheirandish, F., Mosaffa, N., Tarahi, M.J. and Fallahi, S (2018) 'Olive (Olea europaea) leaf extract alters the cytokine profile of Leishmania major-infected macrophages: New insight into the underlying mechanism', Parasite Immunology, 40(4), pp. e12520. doi:10.1111/pim.12520 Preclinical
https://doi.org/10.1111/pim.12520 - de Bock, M., Derraik, J.G., Brennan, C.M., Biggs, J.B. and others (2013) 'Olive (Olea europaea L.) leaf polyphenols improve insulin sensitivity in middle-aged overweight men: a randomized, placebo-controlled, crossover trial', PLoS One, 8(3), pp. e57622. doi:10.1371/journal.pone.0057622 Randomized trial
https://doi.org/10.1371/journal.pone.0057622 - Pasban-Aliabadi, H., Esmaeili-Mahani, S., Sheibani, V., Abbasnejad, M. and others (2013) 'Inhibition of 6-hydroxydopamine-induced PC12 cell apoptosis by olive (Olea europaea L.) leaf extract is performed by its main component oleuropein', Rejuvenation Research, 16(2), pp. 134-142. doi:10.1089/rej.2012.1384 Preclinical
https://doi.org/10.1089/rej.2012.1384 - Imperatrice, M., Lasfar, A., van Kalkeren, C.A.J. and Troost, F (2024) 'Olive Leaf Extract Supplementation Improves Postmenopausal Symptoms: A Randomized, Double-Blind, Placebo-Controlled Parallel Study on Postmenopausal Women', Nutrients, 16(22), pp. 3879. doi:10.3390/nu16223879 Randomized trial
https://doi.org/10.3390/nu16223879 - de Bock, M., Thorstensen, E.B., Derraik, J.G., Henderson, H.V. and others (2013) 'Human absorption and metabolism of oleuropein and hydroxytyrosol ingested as olive (Olea europaea L.) leaf extract', Molecular Nutrition & Food Research, 57(11), pp. 2079-2085. doi:10.1002/mnfr.201200795 Preclinical
https://doi.org/10.1002/mnfr.201200795 - Ismail, M.A., Norhayati, M.N. and Mohamad, N (2021) 'Olive leaf extract effect on cardiometabolic profile among adults with prehypertension and hypertension: a systematic review and meta-analysis', PeerJ, 9, pp. e11173. doi:10.7717/peerj.11173 Meta-analysis / review
https://doi.org/10.7717/peerj.11173 - Boskov Hansen, H.C. et al (2012) 'Oleocanthal, a phenolic derived from virgin olive oil: a review of the beneficial effects on inflammatory disease', 13(9), pp. 11628--11670. doi:10.3390/ijms150712323 Traditional / reference
https://doi.org/10.3390/ijms150712323 - Wainstein, J. et al (2012) 'Olive leaf extract as a hypoglycemic agent in both human diabetic subjects and in rats', 15(7), pp. 605--610. doi:10.1089/jmf.2011.0243 Randomized trial
https://doi.org/10.1089/jmf.2011.0243 - Waterman, E. and Lockwood, B (2007) 'Active components and clinical applications of olive oil', 12(4), pp. 331--342. Preclinical
https://scholar.google.com/scholar?q=Active%20components%20and%20clinical%20applications%20of%20olive%20oil - Duke, J.A (2002) 'Handbook of Medicinal Herbs, Second Edition'. Traditional / reference
https://scholar.google.com/scholar?q=Handbook%20of%20Medicinal%20Herbs%2C%20Second%20Edition - de Bock, M., Derraik, J.G.B., Brennan, C.M., Biggs, J.B., Morgan, P.E., Hodgkinson, S.C., Hofman, P.L. and Cutfield, W.S (2013) 'Olive (Olea europaea L.) leaf polyphenols improve insulin sensitivity in middle-aged overweight men: a randomized, placebo-controlled, crossover trial', PLoS One, 8(3), pp. e57622. doi:10.1371/journal.pone.0057622 Randomized trial
https://doi.org/10.1371/journal.pone.0057622 - Willcox, M.L., Elugbaju, C., Al-Anbaki, M., Lown, M. and Graz, B (2021) 'Effectiveness of Medicinal Plants for Glycaemic Control in Type 2 Diabetes: An Overview of Meta-Analyses of Clinical Trials', Frontiers in Pharmacology, 12, pp. 777561. doi:10.3389/fphar.2021.777561 Meta-analysis / review
https://doi.org/10.3389/fphar.2021.777561 - Sahebkar, A., Soranna, D., Liu, X., Thomopoulos, C., Simental-Mendia, L.E., Derosa, G., Maffioli, P. and Parati, G (2016) 'A systematic review and meta-analysis of randomized controlled trials investigating the effects of supplementation with Nigella sativa (black seed) on blood pressure', Journal of Hypertension, 34(11), pp. 2127-2135. doi:10.1097/HJH.0000000000001049 Meta-analysis / review
https://doi.org/10.1097/HJH.0000000000001049
Generated automatically from the Omnia Sana plant database and its cited sources. For educational purposes only — not medical advice. Always consult a qualified practitioner before using medicinal plants.