🟢 100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 43% of ingredients have research evidence
A Label Compliance Grade

Product Label

📸

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Label Data

4 Capsule(s) Serving Size
15 Servings
Other Combinations Product Type
43% Evidence Coverage

Supplement Facts — Evidence Check

Ester-C(R)
240 mg (400% DV)
20 mg (133% DV)
✅ 1.8× RDA — within safe limits 📚 258 studies (Tier A: 6, B: 134)
RDA 11mg This product: 20mg UL 40mg
667 mg
📊 Market median: 500.0mg (497 products) 📚 132 studies (Tier A: 0, B: 40)
This product: 667mg
📊 Market median: 400.0mg (380 products) 📚 34 studies (Tier A: 1, B: 10)
This product: 667mg
333 mg
📊 Market median: 450.0mg (130 products) 📚 1 studies — no high-quality reviews
This product: 333mg
Gotu Kola
133 mg
Proteolytic Enzyme Blend
133 mg

Other Ingredients

Microcrystalline Cellulose Rice Flour Ascorbyl Palmitate Silica

Label Claims — Verification

All Other
All Other (99% of products) Structure/Function (74% of products) Nutrient (3% of products)

Target Groups

Vegetarian Adult (18 - 50 Years) Kosher Gluten Free

Product Information

📋 Directions for Use

SUGGESTED USE: As a dietary supplement, take four (4) capsules at the onset of symptoms of a cold. You may take up to eight (8) capsules per day or as directed by a healthcare professional.

⚠️ Warnings & Precautions

KEEP OUT OF REACH OF CHILDREN.

🧪 Formulation Notes

All Olympian Labs products are free from most allergens such as corn, yeast, barley, gluten, wheat, soy, lactose, all milk products, citrus, fish, egg products, as well as added flavorings, sugars, sweeteners, salt, preservatives, salicylates, artificial colors and coatings.

Contains Vegetable Enzymes

Additional Information

OLYMPIAN LABS PRESIDENT'S GUARANTEE: I guarantee that all Olympian Labs products are of the highest quality ingredients and lab assayed to ensure that what we say on the label is actually in the product.

Confused on what to take? Check yourself at: WhatVitaminsAreRightForYou.com

STORE IN A COOL, DRY PLACE.

VEGETARIAN & KOSHER CAPSULES V

Since 1992 OL

Ester-C(R)

Made in USA

When you buy an Olympian Labs product, you can be sure you are buying the best.

Product Details

UPC / SKU 7 10013 00166 5
DSLD Entry Date 2012-06-25
Product Type Other Combinations
Form Capsule
DSLD ID 9477
Data Updated 2026-04-11

Research Evidence

38 Research Sources
52 Avg Quality Score
15 Meta Analysis
12 Systematic Review
6 Rct
2 Clinical Trial
1 Regulatory Source
1 Openfda Safety
A Echinacea for preventing and treating the common cold
Meta Analysis The Cochrane database of systematic reviews 2014
B Efficacy and safety of Echinacea purpurea in treating upper respiratory infections and complications of otitis media in children: Systematic review and meta-analysis
Meta Analysis Clinical nutrition ESPEN 2025
B Echinacea for preventing and treating the common cold
Systematic Review The Cochrane database of systematic reviews 2000
B Echinacea Supplementation Does Not Impact Aerobic Capacity and Erythropoiesis in Athletes: A Meta-Analysis
Meta Analysis Nutrients 2024
B Echinacea for preventing and treating the common cold
Meta Analysis The Cochrane database of systematic reviews 2006
B Therapeutic Potential of a Natural Blend of Aronia melancarpa, Lonicera caerulea, and Echinacea purpurea Extracts in Treating Upper Respiratory Tract Infections: Preliminary Clinical and In Vitro Immunomodulatory Insights
Rct International journal of molecular sciences 2024
B Herbal Medicine in Children With Respiratory Tract Infection: Systematic Review and Meta-Analysis
Meta Analysis Academic pediatrics 2018
B Evaluation of echinacea for the prevention and treatment of the common cold: a meta-analysis
Meta Analysis The Lancet. Infectious diseases 2007
B Herbal Medicine for Cough: a Systematic Review and Meta-Analysis
Meta Analysis Forschende Komplementarmedizin (2006) 2015
B Echinacea for the prevention and treatment of upper respiratory tract infections: A systematic review and meta-analysis
Meta Analysis Complementary therapies in medicine 2019
View all evidence for Echinacea →

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