🟢 100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 100% of ingredients have research evidence
A Label Compliance Grade

Product Label

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Label Data

1 Capsule(s) Serving Size
Botanical Product Type
100% Evidence Coverage

Supplement Facts — Evidence Check

📊 Market median: 175.0mg (497 products) 📚 11 studies (Tier A: 0, B: 1)
This product: 300mg
📊 Market median: 175.0mg (497 products) 📚 11 studies (Tier A: 0, B: 1)
This product: 250mg

Other Ingredients

Vegetable Cellulose Capsule Dicalcium Phosphate

Label Claims — Verification

All Other
Structure/Function
All Other (100% of products) Structure/Function (91% of products) Nutrient (41% of products)

Target Groups

Vegetarian Adult (18 - 50 Years)

Product Information

📋 Directions for Use

Directions: As a dietary supplement, take one capsule two times daily.

⚠️ Warnings & Precautions

KEEP OUT OF REACH OF CHILDREN

WARNING: Consult your physician prior to using this product if you are pregnant, nursing, taking medication, or have a medical condition. Discontinue use two weeks prior to surgery.

🧪 Formulation Notes

No Sugar, No Artficial Colors, No Artifical Flavors, Sodium Free, No Wheat, No Gluten, No Soy, No Dairy, Yeast Free.

Additional Information

Store in a cool, dry place.

550 mg 15% Polyphenols

CODE 194912 DGG

Made in the USA

Seasonal Antioxidant Defense*

Visit us at www.gnc.com

Product Details

UPC / SKU 0 48107 07003 8
DSLD Entry Date 2011-10-26
Product Type Botanical
Form Capsule
DSLD ID 702
Data Updated 2026-04-11

Research Evidence

12 Research Sources
48 Avg Quality Score
4 Rct
4 Systematic Review
2 Meta Analysis
1 Clinical Trial
1 Openfda Safety
B Black elderberry (Sambucus nigra) supplementation effectively treats upper respiratory symptoms: A meta-analysis of randomized, controlled clinical trials
Meta Analysis Complementary therapies in medicine 2019
C Elderberry Supplementation Reduces Cold Duration and Symptoms in Air-Travellers: A Randomized, Double-Blind Placebo-Controlled Clinical Trial
Rct Nutrients 2016
C Elderberry for prevention and treatment of viral respiratory illnesses: a systematic review
Systematic Review BMC complementary medicine and therapies 2021
C Effect of herbal compounds on coronavirus; a systematic review and meta-analysis
Meta Analysis Virology journal 2022
C Anthroposophic medicine in the treatment of pediatric pseudocroup: A systematic review
Systematic Review Complementary therapies in medicine 2018
C Effect of Dietary Supplementation with Lutein, Zeaxanthin, and Elderberries on Dry Eye Disease (DED) and Immunity: A Randomized Controlled Trial.
Rct Nutrients
C A systematic review on the sambuci fructus effect and efficacy profiles
Systematic Review Phytotherapy research : PTR 2010
C An evidence-based systematic review of elderberry and elderflower (Sambucus nigra) by the Natural Standard Research Collaboration
Systematic Review Journal of dietary supplements 2014
C Physical Fitness, Body Composition and Frailty in Elderly People.Exercise Program Effecsts. EXERNET Elder 3.0
Clinical Trial ClinicalTrials.gov 2018
C Inhibition of several strains of influenza virus in vitro and reduction of symptoms by an elderberry extract (Sambucus nigra L.) during an outbreak of influenza B Panama
Rct Journal of alternative and complementary medicine (New York, N.Y.) 1995
View all evidence for Elderberry →

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