# Boldine **Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/boldine **Data Source:** Hermetica Superfoods Ingredient Encyclopedia **Updated:** 2026-03-31 **Evidence Score:** 4 / 10 **Category:** Compound **Also Known As:** (S)-Boldine, Boldo alkaloid, Peumus boldus alkaloid, Aporphine alkaloid boldine, Chilean boldo extract alkaloid ## Overview Boldine is a naturally occurring aporphine alkaloid derived primarily from the Chilean boldo tree (Peumus boldus), acting as a potent antioxidant and [dopamine](/ingredients/condition/mood) receptor modulator. Its primary mechanisms include [free radical scaveng](/ingredients/condition/antioxidant)ing, cytochrome P450 inhibition, and alpha-adrenergic receptor antagonism, underpinning its [hepatoprotective](/ingredients/condition/detox), [neuroprotective](/ingredients/condition/cognitive), and kidney-protective effects. ## Health Benefits • [Neuroprotective effect](/ingredients/condition/cognitive)s in spinal cord injury models - improved locomotor function and greater spared white matter in mouse studies (preliminary evidence) • Kidney protection in diabetes - prevented renal alterations including proteinuria in diabetic rat models (preliminary evidence) • [Endothelial function](/ingredients/condition/heart-health) support - protected blood vessel function in hypertensive and diabetic rats at 20 mg/kg (preliminary evidence) • [Oxidative stress](/ingredients/condition/antioxidant) reduction - demonstrated antioxidant action and reduced ROS in ALS models and endothelial cells (preliminary evidence) • [Anti-inflammatory](/ingredients/condition/inflammation) modulation - reduced expression of inflammatory markers Ccl2, IL-6, and CD68 in spinal cord injury models (preliminary evidence) ## Mechanism of Action Boldine acts as a potent free radical scavenger, neutralizing [reactive oxygen species](/ingredients/condition/antioxidant) (ROS) partly through its catechol moiety, and inhibits lipid peroxidation in cell membranes. It modulates [dopamine](/ingredients/condition/mood)rgic signaling by antagonizing D1 and D2 receptors and also blocks alpha-1 and alpha-2 adrenergic receptors, influencing [vascular tone](/ingredients/condition/heart-health) and neurological function. Additionally, boldine inhibits cytochrome P450 enzymes—particularly CYP1A2 and CYP2C9—reducing oxidative metabolic activation of pro-carcinogens and modulating [inflammatory](/ingredients/condition/inflammation) cyclooxygenase (COX) pathways. ## Clinical Summary The majority of boldine research consists of in vitro cell studies and rodent models rather than human clinical trials, placing current evidence at a preliminary stage. In mouse spinal cord injury models, boldine administration improved locomotor function scores and preserved measurably greater spared white matter volume compared to controls. Diabetic rat studies demonstrated that boldine prevented proteinuria and attenuated renal glomerular alterations, suggesting nephroprotective potential in hyperglycemic states. No large-scale randomized controlled trials in humans have been published to date, so all efficacy claims must be interpreted with significant caution. ## Nutritional Profile Boldine is a pure aporphine alkaloid compound (not a food or nutritional ingredient), so it has no macronutrient, micronutrient, vitamin, mineral, or fiber profile in the conventional dietary sense. Molecular formula: C19H21NO4, molecular weight: 327.37 g/mol. It is the primary active alkaloid found in boldo (Peumus boldus), comprising approximately 0.1–0.2% of dried boldo leaf by weight and up to 25–30% of crude boldo bark alkaloid extracts. Bioactive identity: aporphine-class alkaloid with catechol and methylenedioxy functional groups responsible for its antioxidant and pharmacological activity. Antioxidant potency: reported ORAC and DPPH radical scavenging activity significantly exceeding that of vitamin E (alpha-tocopherol) on a molar basis in vitro, with IC50 values in the range of 5–15 µM in various [free radical](/ingredients/condition/antioxidant) assays. Bioavailability: lipophilic compound (logP approximately 1.8–2.2), absorbed via passive diffusion in the gastrointestinal tract; crosses the blood-brain barrier based on animal study data. Typical experimental doses in animal studies range from 5–20 mg/kg body weight. No established dietary reference intake or tolerable upper limit exists. Available commercially as isolated compound with purity typically ≥98% (HPLC grade). Not a source of calories, protein, fat, carbohydrates, or micronutrients. ## Dosage & Preparation No clinically studied human dosages are available. Animal studies used 20 mg/kg oral or intraperitoneal administration for 7 days, achieving plasma concentrations of 7.2-8.8 μM in heart tissue. Consult a healthcare provider before starting any new supplement. ## Safety & Drug Interactions Boldine inhibits CYP1A2 and CYP2C9 enzymes, creating clinically relevant interaction risks with drugs metabolized by these pathways, including warfarin, theophylline, and certain NSAIDs—potentially increasing their plasma concentrations. Its alpha-adrenergic antagonism may potentiate antihypertensive medications, risking additive hypotension. Pregnancy and lactation safety has not been established, and boldo-derived preparations have historically been contraindicated in bile duct obstruction and severe hepatic disease due to potential choleretic overstimulation. High doses in animal studies have shown cytotoxic effects, and human dosing thresholds for safety have not been formally determined. ## Scientific Research No human clinical trials, randomized controlled trials, or meta-analyses have been conducted on boldine. All available evidence comes from preclinical animal and in vitro studies, including mouse spinal cord injury models showing improved locomotor function and diabetic rat models demonstrating kidney protection. ## Historical & Cultural Context No information on traditional or historical use is provided in the available research. The compound is derived from the South American boldo tree but specific traditional medicine applications are not documented in these studies. ## Synergistic Combinations [Antioxidant](/ingredients/condition/antioxidant)s, [neuroprotective](/ingredients/condition/cognitive) compounds, [anti-inflammatory](/ingredients/condition/inflammation) agents, endothelial support nutrients, kidney protective compounds ## Frequently Asked Questions ### What plant does boldine come from? Boldine is the principal alkaloid of Peumus boldus, commonly called the boldo tree, an evergreen native to the Andean slopes of Chile and Peru. It is found in the leaves and bark and constitutes roughly 0.1–0.2% of the dry leaf weight. Boldo leaf has been used in traditional South American medicine for centuries, primarily for digestive and liver complaints. ### Is boldine safe to take with blood thinners like warfarin? Boldine inhibits CYP2C9, the primary enzyme responsible for metabolizing the S-warfarin enantiomer, which could reduce warfarin clearance and elevate anticoagulant effects, increasing bleeding risk. This interaction has not been formally quantified in human pharmacokinetic studies, but the mechanistic basis is well-established in vitro. Anyone taking warfarin or other anticoagulants should consult a physician before using boldine or boldo-containing supplements. ### Can boldine protect the kidneys in diabetes? Animal studies in streptozotocin-induced diabetic rats showed boldine supplementation prevented the development of proteinuria and attenuated structural glomerular alterations characteristic of diabetic nephropathy. The protective effect is attributed to boldine's antioxidant activity reducing oxidative stress-driven renal damage and its anti-inflammatory modulation of NF-κB signaling pathways. These findings are promising but have not yet been replicated in human clinical trials. ### What is the standard dosage of boldine? No standardized human dosage for boldine as an isolated compound has been established through clinical trials. Boldo leaf extracts in traditional and commercial use are commonly dosed at 60–200 mg of standardized extract per day, but the actual boldine content varies widely by product. Animal studies demonstrating protective effects have used doses in the range of 10–50 mg/kg body weight, which do not translate directly to human equivalents without safety validation. ### Does boldine have neuroprotective effects? In mouse models of spinal cord injury, boldine treatment resulted in significantly improved locomotor function scores on the Basso Mouse Scale and histologically confirmed greater preservation of spared white matter compared to untreated injured controls. These effects are believed to involve reduction of ROS-mediated secondary injury cascades and possible modulation of dopaminergic signaling via D1/D2 receptor antagonism. Evidence remains confined to preclinical animal models, and human neurological applications have not been studied. ### What does the research evidence show about boldine's effectiveness? Most evidence for boldine comes from animal studies (rat and mouse models) showing benefits for kidney protection in diabetes, neuroprotection in spinal cord injury, and endothelial function support. Human clinical trials on boldine are limited, making it difficult to confirm whether results from animal research translate to therapeutic effects in people. Current research is considered preliminary, and more human studies are needed to establish efficacy and optimal dosing for health conditions. ### Who might benefit most from boldine supplementation? Based on animal research, boldine may be of interest to people with diabetes seeking kidney support, those concerned about vascular health in hypertensive conditions, or individuals exploring neuroprotective supplements. However, because human clinical evidence is limited, boldine should not be considered a proven treatment for these conditions without consultation with a healthcare provider. Those with existing kidney disease, hypertension, or diabetes should discuss boldine use with their physician before starting supplementation. ### How does boldine compare to other antioxidant and neuroprotective compounds? Boldine is an alkaloid with antioxidant properties, similar in some respects to other plant-derived neuroprotective compounds, but it has a relatively narrow research base compared to more established ingredients like N-acetyl-L-cysteine or alpha-lipoic acid. Unlike these better-studied alternatives, boldine's specific mechanisms and human efficacy remain largely unexplored. Choosing between boldine and other neuroprotective or kidney-protective compounds should be guided by the strength of evidence and individual health needs, preferably under professional guidance. --- *Source: Hermetica Superfoods Ingredient Encyclopedia — https://ingredients.hermeticasuperfoods.com* *License: CC BY-NC-SA 4.0 — Attribution required. Commercial use: admin@hermeticasuperfoods.com*