100/100

This product looks safe

No ingredients exceed tolerable upper intake levels
Limited research evidence available for ingredients

B Label Compliance Grade

Label

Product Label

Open Full PDF View on NIH DSLD →

Details

Label Data

1 Tablet(s)

Serving Size

Servings

Other Combinations

Product Type

Evidence Coverage

Ingredients

Supplement Facts — Evidence Check

Vitamin C

1000 mg (1110% DV)

In a base that contains

640 mg

Other Ingredients

Microcrystalline Cellulose Stearic Acid Croscarmellose Sodium Vegetable Magnesium Stearate Silicon Dioxide natural Caramel color Pharmaceutical Glaze Magnesium Silicate

Claims

Label Claims — Verification

Unverified All Other

Unverified Structure/Function

Info

Product Information

Directions for Use

Directions: Adults - Take one tablet daily, preferably with food, as a dietary supplement.

Warnings & Precautions

Caution: If you are pregnant, nursing, taking any medications or have a medical condition, consult your physician before use.

Discontinue use and consult your physician if any adverse reactions occur.

Keep out of reach of children.

Tamper-Evident Seal: Do not use product if seal appears tampered.

Formulation Notes

Antioxdant & immune health support

Guaranteed no added: Sugar, Starch, Yeast, Soy, Wheat, Dairy, Gluten, Fish, Tree Nuts, Peanuts, Egg, Fragrance, Artificial Flavors, Preservatives, Animal Products, Crustacean Shellfish. Sodium Free.

Gluten free Soy free

Additional Information

Mason Guarantee Laboratory tested cGMP Certified Good Manufacturing Practice

Certified N Mason natural Est. 1967 New

Store in a dry place under controlled room temperature: 20 degrees - 25 degrees C (68 degrees - 77 degrees F).

Please recycle

Metadata

Product Details

UPC / SKU3 11845 11739 7

DSLD Entry Date2021-03-25

Product TypeOther Combinations

FormTablet or Pill

BrandMason Natural

DSLD ID244643

Data Updated2026-04-11

Research

Research Evidence

184

Research Sources

Avg Quality

Systematic Review

Meta Analysis

Rct

Clinical Trial

Cochrane Review

Openfda Safety

B Treatment of gouty arthritis with traditional Chinese medicine decoction: Meta-analysis, network pharmacology analysis, and molecular docking

Meta Analysis Medicine 2024 PubMed DOI

B Effects of quercetin supplementation on lipid profile: A systematic review and meta-analysis of randomized controlled trials

Meta Analysis Critical reviews in food science and nutrition 2017 PubMed

B Dietary polyphenols and the risk of metabolic syndrome: a systematic review and meta-analysis

Meta Analysis BMC endocrine disorders 2024 PubMed DOI

B Quercetin and endurance exercise capacity: a systematic review and meta-analysis

Meta Analysis Medicine and science in sports and exercise 2011 PubMed DOI

B Dietary flavonoid intake and smoking-related cancer risk: a meta-analysis

Meta Analysis PloS one 2013 PubMed DOI

B Clinical efficacy evaluation and potential mechanism prediction on Guizhi-Shaoyao-Zhimu decoction in the treatment of gouty arthritis based on meta-analysis, network pharmacology analysis, and molecular docking

Meta Analysis Medicine 2023 PubMed DOI

B A Systematic Review: Quercetin-Secondary Metabolite of the Flavonol Class, with Multiple Health Benefits and Low Bioavailability

Systematic Review International journal of molecular sciences 2024 PubMed DOI

B Dietary flavonoid for preventing colorectal neoplasms.

Cochrane Review The Cochrane database of systematic reviews PubMed DOI

B Flavonoids for treating venous leg ulcers.

Cochrane Review The Cochrane database of systematic reviews PubMed DOI

B The effects of quercetin supplementation on lipid profiles and inflammatory markers among patients with metabolic syndrome and related disorders: A systematic review and meta-analysis of randomized controlled trials

Meta Analysis Critical reviews in food science and nutrition 2020 PubMed DOI

View all evidence for Quercetin →

Compare

Similar Products

Citrus Bioflavonoid Complex 1000 mg

Vitabase · Tablet or Pill

100

Citrus Bioflavonoids 500 mg

Country Life · Tablet or Pill

100

Citrus Bioflavonoids Complex 1000 mg

Martin Avenue Pharmacy · Tablet or Pill

100

Quercetin-S

Nutri-West · Tablet or Pill

100

Citrus Bioflavonoid Complex 1000 mg

Solgar · Tablet or Pill

100

View all Quercetin products →

Quercetin research Best Quercetin All Quercetin products More from Mason Natural View on NIH DSLD →

This product page is for informational purposes only and does not constitute medical advice. Always consult your healthcare provider before taking any supplement.