# Sambucus racemosa

**Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/sambucus-racemosa
**Data Source:** Hermetica Superfoods Ingredient Encyclopedia
**Updated:** 2026-04-02
**Evidence Score:** 2 / 10
**Category:** European
**Also Known As:** red elderberry, racemose elder, red-berried elder, European red elder, mountain elder, scarlet elder, red elder, racemose elderberry

## Overview

Sambucus racemosa, red elderberry, contains lectins and cyanogenic glycosides as primary bioactive compounds that interact with toll-like receptor 4 (TLR4) signaling pathways to modulate innate immune responses. Preliminary in vitro evidence suggests these compounds activate JNK-mediated macrophage activity, though clinical human data remain limited.

## Health Benefits

• [Immune system](/ingredients/condition/immune-support) stimulation through TLR4-dependent JNK activation in macrophage cells (preliminary evidence from in vitro studies)
• Enhanced phagocytic activity in immune cells, potentially supporting natural defense mechanisms (demonstrated in cell culture models)
• Potential respiratory support based on related species data showing 50% symptom reduction within 2-4 days (strong evidence for S. nigra, not S. racemosa)
• [Anti-inflammatory](/ingredients/condition/inflammation) activity through modulation of inflammatory mediators including TNF-α and IL-1β (preliminary evidence from cell studies)
• Traditional use for inflammatory conditions, though specific clinical evidence for S. racemosa is lacking

## Mechanism of Action

Sambucus racemosa extracts interact with toll-like receptor 4 (TLR4) on macrophages, triggering downstream c-Jun N-terminal kinase (JNK) phosphorylation that upregulates [pro-inflammatory cytokine](/ingredients/condition/inflammation) production including TNF-α and IL-6. The lectin constituents are believed to enhance phagocytic activity by stimulating F-actin polymerization in immune cells, improving pathogen engulfment efficiency. Cyanogenic glycosides such as sambunigrin undergo enzymatic hydrolysis to release hydrogen cyanide at low concentrations, which may contribute to both [antimicrobial](/ingredients/condition/immune-support) and potentially toxic properties depending on preparation method.

## Clinical Summary

Current evidence for Sambucus racemosa is largely confined to in vitro cell culture models and animal studies, with no robust randomized controlled trials in human populations established as of the latest review. Cell-based studies have demonstrated measurable increases in phagocytic index in macrophage cultures exposed to standardized aqueous extracts, but sample conditions do not reliably translate to oral bioavailability in humans. German Commission E has not approved Sambucus racemosa for any therapeutic indication, distinguishing it from its close relative Sambucus nigra, which carries more documented human study data. The overall evidence strength is preliminary, and quantified clinical outcomes such as infection rate reduction or immune marker improvement in humans are not yet available.

## Nutritional Profile

Sambucus racemosa (red elderberry) berries contain moderate levels of vitamin C (approximately 36-40 mg per 100g fresh weight, though lower than S. nigra), with small amounts of vitamin A precursors (beta-carotene estimated at 300-400 µg/100g). Carbohydrate content is approximately 11-13g/100g, predominantly fructose and glucose, with dietary fiber around 7g/100g including pectin fractions. Protein content is low at approximately 0.7-1.0g/100g. Fat content is negligible at under 0.5g/100g, though seeds contain fatty acids including linoleic acid. Key bioactive compounds include cyanogenic glycosides (sambunigrin, primarily in unripe berries and seeds, requiring heat processing to reduce to safe levels), anthocyanins predominantly cyanidin-3-sambubioside and cyanidin-3-glucoside (estimated 200-400 mg/100g, notably lower concentration than S. nigra). Flavonoids include quercetin, rutin, and kaempferol derivatives (combined approximately 50-150 mg/100g). Triterpene acids including alpha- and beta-amyrin, ursolic acid, and oleanolic acid are present in bark and leaves. Lectins (SRL, Sambucus racemosa lectin) are documented bioactive proteins with demonstrated hemagglutinating activity. Mineral content includes potassium (~280 mg/100g), calcium (~38 mg/100g), phosphorus (~39 mg/100g), and iron (~1.6 mg/100g). Bioavailability of anthocyanins is limited (typically 1-5% absorption), though the polyphenol matrix may enhance local gastrointestinal effects. Data on specific micronutrient concentrations is more limited compared to S. nigra, with most precise analytical work conducted on European populations of the species.

## Dosage & Preparation

In vitro studies of Sambucus racemosa aqueous extract employed concentrations of 12.5-50 µg/ml in cell culture systems. However, equivalent human oral dosing recommendations cannot be reliably extrapolated from these laboratory concentrations without clinical pharmacokinetic data. No standardized human dosage recommendations are available in the current literature. Consult a healthcare provider before starting any new supplement.

## Safety & Drug Interactions

Raw or unripe Sambucus racemosa berries, bark, leaves, and roots contain significant concentrations of cyanogenic glycosides including sambunigrin and prunasin, which can cause nausea, vomiting, and diarrhea upon ingestion of unprocessed material. Proper cooking or processing degrades these glycosides substantially, reducing acute toxicity risk, but standardized safe processing thresholds for commercial preparations have not been formally established. Individuals taking immunosuppressant medications such as cyclosporine or corticosteroids should exercise caution, as the immune-stimulating lectins may theoretically counteract drug effects, though direct interaction studies are absent. Use during pregnancy and breastfeeding is not recommended due to insufficient safety data and the known presence of cyanogenic compounds in the raw plant.

## Scientific Research

Direct clinical evidence for Sambucus racemosa is currently limited to in vitro mechanistic studies in macrophage cell cultures. However, related Sambucus nigra has robust clinical support, including a meta-analysis of 180 participants showing substantial reduction in upper respiratory symptoms with large effect sizes, and a rapid review of five clinical studies (936 adults) demonstrating approximately 50% symptom reduction within 2-4 days when taken within 48 hours of symptom onset.

## Historical & Cultural Context

While specific traditional use documentation for Sambucus racemosa is limited in available sources, related Sambucus species, particularly S. ebulus (dwarf elder), have been traditionally used to treat [inflammatory](/ingredients/condition/inflammation) conditions including sore throat, joint pains, and rheumatic pains. S. nigra has a long history in European folk medicine for respiratory and [immune support](/ingredients/condition/immune-support).

## Synergistic Combinations

Echinacea purpurea, Astragalus membranaceus, Vitamin C, Zinc, Vitamin D3

## Frequently Asked Questions

### Is Sambucus racemosa the same as elderberry?

Sambucus racemosa (red elderberry) is a distinct species from Sambucus nigra (black elderberry), the variety most commonly used in supplements and studied in clinical trials. Red elderberry contains higher concentrations of cyanogenic glycosides like sambunigrin compared to black elderberry, making raw consumption more hazardous and proper preparation more critical.

### Can you eat Sambucus racemosa berries raw?

Raw Sambucus racemosa berries should not be consumed because they contain cyanogenic glycosides, particularly sambunigrin, which hydrolyze to release hydrogen cyanide in the gut and can cause vomiting, nausea, and diarrhea. Thorough cooking breaks down these glycosides significantly, but no standardized safe preparation protocol for supplement use has been formally validated by regulatory agencies.

### What does German Commission E say about Sambucus racemosa?

German Commission E has not issued an approved monograph for Sambucus racemosa, meaning it lacks an official therapeutic indication under this regulatory framework, unlike Sambucus nigra flowers which have been evaluated. This absence reflects insufficient clinical evidence and unresolved safety concerns regarding its cyanogenic glycoside content rather than a formal disapproval.

### How does Sambucus racemosa support the immune system?

In vitro studies indicate that Sambucus racemosa extracts bind to toll-like receptor 4 (TLR4) on macrophages, activating the JNK signaling cascade and increasing production of cytokines such as TNF-α and IL-6, which coordinate early immune responses. The plant's lectin constituents also appear to enhance phagocytic activity in cultured immune cells, though these mechanisms have not been confirmed in human clinical trials.

### What is the recommended dosage of Sambucus racemosa supplement?

No clinically validated or regulatory-approved dosage for Sambucus racemosa supplements exists, as human pharmacokinetic and dose-response studies have not been conducted. Because of the cyanogenic glycoside content and absence of safety benchmarks, self-supplementation with unstandardized red elderberry products carries uncertain risk, and consultation with a healthcare provider before use is strongly advised.

### Does Sambucus racemosa interact with immune-suppressing medications?

Sambucus racemosa may stimulate immune function through TLR4-dependent pathways, which could theoretically interfere with immunosuppressive medications used after organ transplants or for autoimmune conditions. Individuals taking immunosuppressants should consult their healthcare provider before supplementing with Sambucus racemosa to avoid unwanted immune activation. No major drug interactions have been formally documented, but caution is warranted with immunomodulating pharmaceutical therapies.

### Which form of Sambucus racemosa supplement has the best evidence for respiratory support?

Standardized extract forms of Sambucus racemosa show the strongest clinical support, with related Sambucus nigra studies demonstrating approximately 50% symptom reduction within 2-4 days of use. Liquid extracts and capsules containing concentrated berry extracts are typically preferred over whole dried berries due to higher bioavailability of active compounds. However, direct clinical data specifically for S. racemosa respiratory applications remains limited compared to its better-studied cousin species.

### Is Sambucus racemosa safe for children to use as an immune support supplement?

Safety data for Sambucus racemosa in children is limited, and WHO/EMA monographs do not provide specific pediatric dosing recommendations for this species. While elderberry supplements are commonly given to children, Sambucus racemosa specifically lacks robust clinical trials establishing age-appropriate safety and efficacy in younger populations. Parents should seek guidance from a pediatrician or qualified herbalist before giving Sambucus racemosa products to children.

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*Source: Hermetica Superfoods Ingredient Encyclopedia — https://ingredients.hermeticasuperfoods.com*
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