Olive leaf extract
Olive leaf extract is made from the leaves of Olea europaea, collected mainly in Spain, Italy, Greece and Tunisia during pruning and harvest. Dried leaves are extracted with water or water-ethanol and dried to a bitter powder standardized to oleuropein. Dried leaf for tea and leaf powder are also sold; hydroxytyrosol extracts are usually made from olive fruit or olive mill water rather than leaf.
Suppliers sell different products under the same name. Specify the one you need.
Dry leaf extract sold at a stated oleuropein percentage (commonly 20 to 40%) by HPLC.
Dried, milled leaf; not standardized.
Dried, cut leaf for tea and infusions.
Fresh or dried leaf extract in water, glycerin or ethanol, sold on oleuropein or polyphenols.
Compare each result with your own specification when the lot arrives.
Keep the extract sealed, cool, dry and out of light; oleuropein degrades with moisture and heat. Reseal opened containers. Shelf life or retest date comes from the supplier.
Oleuropein depends on leaf age, cultivar, season and how quickly leaves were dried. Record origin, assay method and supplier lot, and check pesticide results each lot.
Facts from regulators and standards bodies, each linked to its source.
Health Canada's natural health product monograph for olive leaf lists the dry or fresh leaf of Olea europaea as the source material.
Source: webprod.hc-sc.gc.ca (opens in a new tab)The EU Novel Food status Catalogue (entry POL-NF-00545) lists the bud and leaves of Olea europaea as not novel in food supplements, and a non-concentrated aqueous infusion of the leaves as not novel in food.
Source: ec.europa.eu (opens in a new tab)GRN 1119 (Olea europaea leaf extract, notified by BioActor B.V. for use in specified foods and drinks) closed on Feb 8, 2024 with FDA having no questions.
Source: hfpappexternal.fda.gov (opens in a new tab)This is general information, not regulatory advice. Status differs by country and by how the ingredient is used, so check the rules for your product and market.
Manufacturers and distributors whose own websites say they sell it.
Manufacturer · Belpasso, Italy
Sells it as mucosave fg
Bionap is a Sicilian producer of standardized extracts from Mediterranean plants and fruits, such as artichoke leaf, bergamot juice, prickly pear cladodes, olive leaf and mullein, for supplement, personal care and animal health makers.
Manufacturer · Mollet del Vallès, Spain
Euromed is a Spanish producer of standardized botanical extracts for pharmaceutical, supplement, food and cosmetic companies, with plants near Barcelona and in Murcia. It is part of the Dermapharm Group.
Suppliers are in alphabetical order and none pays to appear. Each claim is checked against the supplier’s own website on the date shown. Ask for the specification sheet and a recent COA before you order, and confirm details with the supplier.
Common forms include oleuropein-standardized extract, leaf powder, cut leaf and liquid extract. Ask each supplier for the specification sheet of the exact grade they quote.
Expect oleuropein (HPLC), identity (HPTLC or HPLC fingerprint), pesticide residues, heavy metals, microbiology and residual solvents, each with its method, specification and result for that lot.
Keep the extract sealed, cool, dry and out of light; oleuropein degrades with moisture and heat. Reseal opened containers. Shelf life or retest date comes from the supplier.
Health Canada's natural health product monograph for olive leaf lists the dry or fresh leaf of Olea europaea as the source material. The EU Novel Food status Catalogue (entry POL-NF-00545) lists the bud and leaves of Olea europaea as not novel in food supplements, and a non-concentrated aqueous infusion of the leaves as not novel in food. GRN 1119 (Olea europaea leaf extract, notified by BioActor B.V. for use in specified foods and drinks) closed on Feb 8, 2024 with FDA having no questions.
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