# Blackberry Leaf Extract **Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/blackberry-leaf-extract **Data Source:** Hermetica Superfoods Ingredient Encyclopedia **Updated:** 2026-03-18 **Evidence Score:** 6 / 10 **Category:** Herb **Also Known As:** Rubus fruticosus leaf extract, European blackberry leaf, Bramble leaf extract, Dewberry leaf, Rubus extract, Blackberry foliage extract, Common blackberry leaf ## Overview Blackberry leaf extract contains high concentrations of tannins, particularly ellagitannins, which provide potent [antioxidant](/ingredients/condition/antioxidant) and anti-inflammatory effects. The extract supports [digestive health](/ingredients/condition/gut-health) and [immune function](/ingredients/condition/immune-support) through its ability to modulate [inflammatory pathway](/ingredients/condition/inflammation)s and strengthen epithelial barriers. ## Health Benefits - As a herb-based ingredient, Blackberry Leaf Extract provides targeted health benefits. - Rich in hydrating properties and natural electrolytes for cellular hydration and recovery. - Rich in natural [antioxidant](/ingredients/condition/antioxidant)s, vitamins, and minerals that support overall health and immune resilience. - Provides dietary fiber that promotes digestive regularity and supports a healthy [gut microbiome](/ingredients/condition/gut-health). - Contains vitamin C and flavonoids that enhance immune defense and protect cells from oxidative damage. ## Mechanism of Action Blackberry leaf extract exerts its effects primarily through ellagitannins and condensed tannins that inhibit pro-[inflammatory](/ingredients/condition/inflammation) enzymes like cyclooxygenase and lipoxygenase. These compounds also scavenge [reactive oxygen species](/ingredients/condition/antioxidant) and support intestinal barrier function by strengthening tight junctions between epithelial cells. The tannins demonstrate [antimicrobial](/ingredients/condition/immune-support) activity against pathogenic bacteria while promoting beneficial gut microbiota. ## Clinical Summary Limited human clinical trials exist for blackberry leaf extract specifically. Traditional use studies and small observational trials (n=20-50) suggest potential benefits for digestive comfort and [antioxidant](/ingredients/condition/antioxidant) status. Most research focuses on in vitro antioxidant capacity and animal studies showing [anti-inflammatory](/ingredients/condition/inflammation) effects. Higher-quality randomized controlled trials are needed to establish definitive therapeutic effects and optimal dosing protocols. ## Nutritional Profile - Antioxidants (Vitamin C, Polyphenols): Protect against [oxidative stress](/ingredients/condition/antioxidant) and support immune health. - Tannins: Possess [antimicrobial](/ingredients/condition/immune-support) and [anti-inflammatory](/ingredients/condition/inflammation) properties. - Vitamin K: Plays a role in blood clotting and [bone health](/ingredients/condition/bone-health). - Flavonoids: Help improve circulation and support [cardiovascular health](/ingredients/condition/heart-health). ## Dosage & Preparation Recommended Dosage: 300-600mg of standardized extract 1-2 times daily. Traditional Use & Preparation: Blackberry Leaf Extract can be consumed as a tea, tincture, or capsule. The leaves are typically dried, ground, or steeped in hot water to extract the beneficial compounds. It can be used topically as well in the form of ointments or lotions to soothe skin irritations and promote healing. Blackberry leaf tea is especially popular for its gentle digestive support and detoxifying benefits. General Guidance: Start with a lower dose and increase gradually. Consult a healthcare provider before starting any new supplement, especially if pregnant, nursing, or taking medications. ## Safety & Drug Interactions Blackberry leaf extract is generally well-tolerated with minimal reported side effects. High doses may cause mild gastrointestinal upset due to tannin content. The extract may interact with iron absorption and should be taken separately from iron supplements. Pregnant and breastfeeding women should avoid use due to insufficient safety data and potential uterine stimulant effects. ## Scientific Research Blackberry leaf has been utilized in traditional medicine for centuries. Historically, it was used for its astringent properties to treat digestive issues like diarrhea, and as a tonic for overall health. The leaves were also used as poultices for wounds and burns, and to treat mouth sores and infections. In modern herbalism, blackberry leaf extract is commonly used to support [digestive health](/ingredients/condition/gut-health), treat sore throats, and as an [antioxidant](/ingredients/condition/antioxidant) to combat the effects of aging. ## Historical & Cultural Context Enhance your wellness with Hermetica’s premium Blackberry Leaf Extract—an herbal powerhouse that supports [digestive health](/ingredients/condition/gut-health), boosts [immune function](/ingredients/condition/immune-support), and promotes radiant skin. Shop now to discover this ancient remedy. ## Synergistic Combinations Hermetica Synergy Stack (Formulation Heuristic) Role: Herbal amplifier (adaptation + regulation support) Intention: Immune & [Inflammation](/ingredients/condition/inflammation) | Gut & [Microbiome](/ingredients/condition/gut-health) Primary Pairings: Ginger (Zingiber officinale); Turmeric (Curcuma longa); Chamomile; Lemon Balm Notes (from original entry): Synergy: pair with healthy fats (to support absorption of fat-soluble phytonutrients), vitamin C–rich fruits ([antioxidant](/ingredients/condition/antioxidant) network support), and fermented foods (microbiome potentiation) for a balanced whole-food stack. Evidence: see study_urls / reference_urls Note: This synergy pairing was auto-generated based on ingredient category and common formulation patterns. Verify with a qualified formulator for production use. ## Frequently Asked Questions ### What is the recommended dosage for blackberry leaf extract? Typical dosages range from 200-500mg daily of standardized extract containing 10-20% tannins. Most supplement protocols recommend starting with 200mg once daily with meals to assess tolerance before increasing dosage. ### Can blackberry leaf extract help with diarrhea? Traditional use and preliminary studies suggest blackberry leaf extract may help reduce diarrhea symptoms due to its astringent tannins that can firm stool consistency. However, clinical evidence remains limited and medical evaluation is recommended for persistent digestive issues. ### Does blackberry leaf extract contain caffeine? No, blackberry leaf extract is naturally caffeine-free. The primary active compounds are tannins, flavonoids, and ellagitannins rather than stimulants, making it suitable for evening use without affecting sleep. ### How long does it take for blackberry leaf extract to work? Acute digestive benefits may be noticed within 1-2 hours due to the astringent effects of tannins. For antioxidant and general health benefits, consistent use for 2-4 weeks is typically needed to observe measurable improvements. ### Can I take blackberry leaf extract with other supplements? Blackberry leaf extract is generally compatible with most supplements but should be separated from iron, zinc, and other minerals by 2 hours due to tannin interference with absorption. Consult healthcare providers when combining with blood-thinning medications. ### Is blackberry leaf extract safe during pregnancy and breastfeeding? While blackberry leaf has a long history of traditional use, pregnant and breastfeeding women should consult their healthcare provider before taking blackberry leaf extract supplements. Although the leaf is generally recognized as safe in food amounts, concentrated extracts have not been extensively studied in these populations, and personalized medical guidance is recommended. ### Does blackberry leaf extract interact with blood thinners or diabetes medications? Blackberry leaf extract contains compounds that may have mild anticoagulant properties and could theoretically interact with blood thinners like warfarin or diabetes medications that affect blood sugar. If you take these medications, inform your healthcare provider before adding blackberry leaf extract to your regimen to avoid potential interactions. ### What does clinical research show about blackberry leaf extract's antioxidant benefits? Research indicates that blackberry leaf extract is rich in polyphenols and anthocyanins, compounds with demonstrated antioxidant activity in laboratory and some human studies. However, most clinical evidence focuses on whole blackberry fruit rather than leaf extract specifically, so more targeted human trials are needed to fully establish the extract's efficacy for specific health outcomes. ## References https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6166677/; https://www.sciencedirect.com/science/article/abs/pii/S2221169117300407 --- *Source: Hermetica Superfoods Ingredient Encyclopedia — https://ingredients.hermeticasuperfoods.com* *License: CC BY-NC-SA 4.0 — Attribution required. Commercial use: admin@hermeticasuperfoods.com*