# Plant Monograph: Maqui Berries
**Name of plant:**
Maqui berries
**Catch phrase (Carmina Gadelica or traditional invocation if available):**
No invocation to maqui is recorded in the *Carmina Gadelica*. Among the Mapuche, the plant has longstanding cultural and medicinal associations. A suitable modern poetic rendering is: **“Fruit of the southern forest, dark with the strength of the earth.”** This is a contemporary phrase, not a traditional Mapuche prayer.
**Family:**
Myrtaceae — the myrtle family
**Genus and species:**
*Aristotelia chilensis* (Molina) Stuntz
**Other names:**
Maqui; Maqui berry; Chilean wineberry; Chilean blackberry; Chilean maqui; *Aristotelia chilensis*; *Aristotelia macqui* (historical botanical name); Mapuche maqui.
**Brief introduction:**
Maqui is an evergreen or semi-evergreen shrub or small tree native to temperate southern South America, particularly Chile and adjacent regions of Argentina. It is characteristic of the temperate forests and woodland margins of Patagonia and the Valdivian region. The plant bears clusters of small, intensely dark purple to almost black berries.
The berries have long been gathered and eaten by the **Mapuche and other Indigenous peoples of southern Chile**, both as food and in traditional medicine. Their deep colour reflects a high concentration of anthocyanins and other polyphenols, which has made maqui increasingly popular in modern functional-food and botanical-supplement markets.
Maqui is particularly rich in **delphinidin derivatives**, a class of anthocyanins responsible for much of the berry's intense pigmentation and antioxidant activity. Modern research has investigated maqui extracts for oxidative stress, inflammation, metabolic health and ocular health, although many commercial health claims extend beyond what clinical research currently demonstrates.
**Traditional uses:**
* Fresh berries were eaten as a seasonal food.
* Berries were traditionally prepared as beverages and fermented drinks.
* Used traditionally for gastrointestinal complaints, including diarrhea.
* Employed in Indigenous medicine for inflammatory and febrile conditions.
* Leaves and other plant material were used traditionally in various preparations for general health and healing.
**Historical use:**
* The Mapuche traditionally gathered maqui berries from wild plants in southern Chile.
* The berries were eaten fresh or dried for later use.
* Maqui was used to prepare traditional beverages, including fermented preparations.
* Indigenous medicine employed different parts of the plant for gastrointestinal and inflammatory complaints.
* Maqui became incorporated into Chilean traditional food culture and later into commercial berry cultivation.
**Parts used and method of use:**
* Berries and berry juice.
* Leaves and other aerial portions have also been used traditionally.
Used as:
* Fresh fruit.
* Dried berries or berry powder.
* Infusion or juice.
* Extract standardized for anthocyanin content.
**Use in healing (modern herbal practice):**
* Used as a concentrated source of anthocyanins and dietary polyphenols.
* Investigated for supporting antioxidant defenses.
* Studied for possible effects on inflammatory and metabolic markers.
* Investigated for **ocular surface health and tear production**, particularly in people with dry-eye symptoms.
* Used as a general functional food and nutritional botanical rather than as a treatment for a specific disease.
Clinical research is still developing. The strongest human evidence currently concerns certain **ocular and metabolic parameters**, but maqui should not be represented as a proven treatment for diabetes, cardiovascular disease, cancer or other major illnesses.
**Pharmacology and biochemistry:**
* **Delphinidin-3-glucoside and related delphinidin anthocyanins** — major pigments and bioactive constituents.
* **Cyanidin and other anthocyanins**.
* **Ellagitannins, flavonoids and phenolic acids**.
Mechanisms:
* Anthocyanins can act as **free-radical scavengers and redox-modulating compounds**, contributing to antioxidant activity.
* Polyphenols may influence inflammatory signalling pathways and oxidative-stress responses.
* Maqui anthocyanins may influence metabolic and vascular signalling, although the biological effects observed in laboratory studies cannot automatically be extrapolated to clinical outcomes.
**Overall profile:**
Maqui is a **polyphenol-rich South American berry with particularly high concentrations of delphinidin-type anthocyanins**. It has strong nutritional and phytochemical interest and an emerging human research base. Its traditional food and medicinal history is substantial, while its modern clinical applications remain investigational rather than definitively established.
**Common dosage:**
* **Fresh berries:** Culinary quantities as food.
* **Dried berry powder:** Common commercial servings range approximately **2–5 g daily**, although no universally established therapeutic dose exists.
* **Standardized maqui extract:** Follow the manufacturer's standardized anthocyanin dosage.
* **Berry infusion/juice:** Traditionally consumed as a food beverage; therapeutic dosing has not been standardized.
**Safety factors (including side effects):**
* Maqui berries consumed as food are generally considered well tolerated.
* Concentrated extracts may cause gastrointestinal symptoms such as abdominal discomfort or loose stools in some individuals.
* People taking medication for diabetes should exercise caution with concentrated extracts because of possible effects on glucose metabolism.
* Individuals with known berry or plant allergies should avoid preparations that produce allergic symptoms.
* Long-term safety data for high-dose concentrated maqui extracts remain limited compared with ordinary dietary consumption.
**First aid / adverse reaction response:**
* **Mild gastrointestinal upset:** Discontinue concentrated use and monitor symptoms.
* **Diarrhea or significant abdominal discomfort:** Stop the preparation and maintain adequate hydration.
* **Skin rash or itching:** Discontinue use and seek medical advice if symptoms persist or worsen.
* **Facial swelling, wheezing or difficulty breathing:** Seek emergency medical attention immediately.
**Drug interactions:**
* **Antidiabetic medications:** Theoretical additive effects on blood glucose are possible with concentrated extracts.
* **Antihypertensive medications:** Polyphenol-associated vascular effects create a theoretical possibility of additive blood-pressure lowering.
* **Anticoagulant/antiplatelet medicines:** Clinically significant interaction has not been established, but caution is appropriate with concentrated extracts.
* **General interaction considerations:** Culinary quantities of berries are unlikely to present the same interaction concerns as concentrated standardized extracts.
**Horticultural requirements:**
* USDA / Canadian zone: **Approximately USDA Zones 7–10**; cold tolerance varies according to plant provenance and local conditions.
* Soil pH: **Approximately 5.5–7.0**, preferably slightly acidic and rich in organic matter.
* Light requirements: **Full sun / partial shade**.
* Moisture: **Moderate to consistently moist**, with good drainage.
* Other notes (growth habit, harvest timing, etc.):
* **Growth habit:** Evergreen or semi-evergreen shrub/small tree, commonly reaching approximately 3–5 m but potentially larger under favourable conditions.
* **Flowering/fruiting:** Small pale flowers are followed by clusters of dark purple-black berries.
* **Harvest timing:** Berries ripen during the southern-hemisphere summer, generally around late spring to summer depending on location.
* **Habitat:** Temperate rainforests, woodland edges, disturbed forest and moist valleys of Chile and adjacent Argentina.
* **Propagation/cultivation notes:** Can be propagated from seed or cuttings. It prefers fertile, moisture-retentive soil and protection from severe winter cold. Plants are generally dioecious or functionally require compatible flowering plants for reliable fruit production.
**Sampling of clinical reports / studies:**
* **Clinical study or report:** Human trials of standardized maqui extracts have investigated effects on dry-eye symptoms and tear production, with some studies reporting improvements in tear-film parameters.
* **Metabolic study:** Small human studies have examined maqui anthocyanin preparations in relation to postprandial glucose and metabolic responses, although the evidence remains preliminary.
* **Pharmacological study:** Experimental studies demonstrate antioxidant and anti-inflammatory activity associated particularly with delphinidin-rich extracts.
* **Phytochemical study:** Chemical analyses consistently identify delphinidin glycosides as major anthocyanins, together with cyanidin derivatives, flavonoids and other polyphenols.
* **Ethnobotanical evidence:** Mapuche food and medicinal traditions provide substantial historical evidence for the use of maqui berries and other plant parts.
* **Overall assessment of evidence:** **Strong nutritional and ethnobotanical foundation; substantial phytochemical evidence; promising but limited human clinical evidence; insufficient evidence to support broad disease-treatment claims.**
**A particularly important note for the collection:**
Maqui is worth distinguishing from the many “superfruit” plants whose modern marketing has become detached from their actual ethnobotanical history. *Aristotelia chilensis* has a **genuine Indigenous food and medicinal tradition**, particularly among the Mapuche, that predates its modern reputation as an antioxidant supplement by centuries.
Its chemistry is also unusually interesting. The almost-black colour of the fruit is not simply cosmetic—it reflects a high concentration of **delphinidin-based anthocyanins**. These compounds are responsible for much of the antioxidant activity measured in laboratory assays.
There is an important distinction, however, between **antioxidant activity in a test tube and clinical antioxidant effects in a human being**. Maqui extracts can neutralize reactive species experimentally, but that does not mean that consuming them will “remove toxins,” prevent cancer or cure inflammatory disease. The clinical evidence is considerably narrower.
For the materia medica, I would classify maqui as a **traditional Indigenous food-medicinal berry and modern polyphenol-rich botanical**, with particular emphasis on its Mapuche heritage, deep anthocyanin chemistry and emerging evidence concerning **ocular surface health and metabolic function**.
Educational Use Only: The information presented on this page is provided for educational, historical, and informational purposes only. ArdNemeton na Tuatha and Bhùth Draoi do not provide medical advice. Always consult your physician and pharmacist before using any herb, mushroom, supplement, or botanical product for medicinal purposes. Traditional uses described herein do not constitute medical claims.