🟢 100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 44% of ingredients have research evidence
A Label Compliance Grade

Product Label

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Label Data

1 Capsule(s) Serving Size
90 Servings
Other Combinations Product Type
44% Evidence Coverage

Supplement Facts — Evidence Check

Vitamin C
5 mg (8% DV)
10 IU (33% DV)
✅ Within RDA (0.4× RDA of 15 mg) 📚 177 studies (Tier A: 3, B: 90)
RDA 15mg This product: 6.7mg UL 1000mg
5 mg (333% DV)
📊 4.2× RDA — above typical dose 📚 76 studies (Tier A: 0, B: 33)
RDA 1.2mg This product: 5mg
4 mg (20% DV)
✅ Within RDA (0.3× RDA of 14 mg) 📚 193 studies (Tier A: 5, B: 63)
RDA 14mg This product: 4mg UL 35mg
5 mg (250% DV)
📊 3.8× RDA — above typical dose (UL: 100 mg) 📚 113 studies (Tier A: 3, B: 35)
RDA 1.3mg This product: 5mg UL 100mg
100 mcg (25% DV)
✅ Within RDA (0.2× RDA of 0.4 mg) 📚 225 studies (Tier A: 10, B: 105)
RDA 0.4mg This product: 0.1mg UL 1.0mg
5000 mcg (83333% DV)
📊 2083.3× RDA — above typical dose 📚 138 studies (Tier A: 1, B: 44)
RDA 0.0024mg This product: 5.0mg
Calcium
15 mg (2% DV)
12 mg (3% DV)
📊 Market median: 4002.0mg (1 products) 📚 20 studies (Tier A: 0, B: 2)
This product: 12mg
5 mg (33% DV)
✅ Within RDA (0.5× RDA of 11 mg) 📚 258 studies (Tier A: 6, B: 134)
RDA 11mg This product: 5mg UL 40mg
50 mcg (71% DV)
✅ Within RDA (0.9× RDA of 0.055 mg) 📚 172 studies (Tier A: 0, B: 67)
RDA 0.055mg This product: 0.05mg UL 0.4mg
0.05 mg (25% DV)
📊 Market median: 10.0mg (102 products) 📚 8 studies — no high-quality reviews
RDA 2.3mg This product: 0.05mg UL 11mg
50 mcg (42% DV)
✅ 1.4× RDA — within safe limits 📚 197 studies (Tier A: 1, B: 55)
RDA 0.035mg This product: 0.05mg
Potassium
5 mg (1% DV)
DMAE
30 mg
Rosemary extract
50 mg
📊 Market median: 125.0mg (294 products) 📚 36 studies (Tier A: 1, B: 7)
RDA 550mg This product: 10mg UL 3500mg
Angelica sinensis
25 mg
📊 Market median: 100.0mg (283 products) 📚 142 studies (Tier A: 1, B: 64)
This product: 3mg UL 1200mg
📊 Market median: 340.0mg (243 products) 📚 3 studies — no high-quality reviews
This product: 13mg
📊 Market median: 100.0mg (108 products)
Median 100.0mg This product: 10mg
📊 Market median: 120.0mg (440 products) 📚 187 studies (Tier A: 1, B: 71)
This product: 10mg
10 mg
📊 Market median: 420.0mg (227 products)
Median 420.0mg This product: 10mg
📊 Market median: 4002.0mg (1 products) 📚 20 studies (Tier A: 0, B: 2)
This product: 10mg
500 mcg
📊 Market median: 3.0mg (58 products) 📚 2 studies — no high-quality reviews
This product: 0.5mg UL 20mg
9 mg
📊 Market median: 550.0mg (217 products) 📚 29 studies (Tier A: 0, B: 5)
This product: 9mg
S-Acetyl Glutathione
5 mg
📊 Market median: 30.0mg (45 products)
Median 30.0mg This product: 5mg
📊 Market median: 200.0mg (198 products) 📚 6 studies — no high-quality reviews
This product: 5mg
5 mg
📊 Market median: 500.0mg (143 products)
This product: 5mg
25 mcg
📊 Market median: 0.15mg (41 products)
Median 0.15mg This product: 0.025mg
2 mg
📊 Market median: 100.0mg (116 products) 📚 15 studies (Tier A: 0, B: 3)
This product: 2mg
L-Ornithine
1 mg
1 mg
📊 Market median: 500.0mg (159 products)
Median 500.0mg This product: 1mg
📊 Market median: 500.0mg (193 products) 📚 7 studies — no high-quality reviews
This product: 1mg
Vinpocetine
500 mcg

Other Ingredients

Microcrystalline Cellulose HPMC Magnesium Stearate Silica

Label Claims — Verification

All Other
All Other (99% of products) Structure/Function (83% of products) Nutrient (54% of products)

Target Groups

Vegetarian Adult (18 - 50 Years) Gluten Free Dairy Free

Product Information

📋 Directions for Use

Directions: Take one capsule daily, or as directed by your healthcare practitioner.

⚠️ Warnings & Precautions

Consult your healthcare practitioner prior to use.

Individuals taking medication should discuss potential interactions with their healthcare practitioner.

Contains: Soy.

🧪 Formulation Notes

Does not contain: Wheat, gluten, yeast, animal or dairy products, fish, shellfish, peanuts, tree nuts, egg, artificial colors, artificial sweeteners, or preservatives.

Contains: Soy.

Additional Information

Quatrefolic

ZLB-BAZBRAIN-03 REV. 102814

VEGETARIAN CAPS

THIRD-PARTY VERIFIED GMP COMPLIANT

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This package is completely recyclable

Professional use only

Storage: Keep tightly closed in a cool, dry place.

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Product Details

UPC / SKU 8 71149 00380 7
DSLD Entry Date 2015-09-25
Product Type Other Combinations
Form Capsule
Brand XYMOGEN
DSLD ID 50373
Data Updated 2026-04-11

Research Evidence

371 Research Sources
54 Avg Quality Score
148 Meta Analysis
82 Systematic Review
71 Rct
62 Clinical Trial
2 Regulatory Source
1 Cochrane Review
1 Narrative Review
1 Other
1 Openfda Safety
A Vitamin C supplementation in pregnancy
Meta Analysis The Cochrane database of systematic reviews 2015
A Vitamin C supplementation for the primary prevention of cardiovascular disease
Systematic Review The Cochrane database of systematic reviews 2017
A Vitamin C for preventing and treating the common cold
Meta Analysis The Cochrane database of systematic reviews 2013
A Vitamin C for preventing and treating pneumonia
Meta Analysis The Cochrane database of systematic reviews 2013
A Vitamin E supplementation in pregnancy
Meta Analysis The Cochrane database of systematic reviews 2015
A Vitamin C supplementation for prevention and treatment of pneumonia
Meta Analysis The Cochrane database of systematic reviews 2020
A Vitamin C supplementation for prevention and treatment of pneumonia
Systematic Review The Cochrane database of systematic reviews 2021
A Nutritional interventions for preventing and treating pressure ulcers
Meta Analysis The Cochrane database of systematic reviews 2024
A Does Vitamin C Supplementation Provide a Protective Effect in Periodontal Health? A Systematic Review and Meta-Analysis
Meta Analysis International journal of molecular sciences 2024
A Circulating vitamin C concentration and risk of cancers: a Mendelian randomization study
Meta Analysis BMC medicine 2021
View all evidence for Vitamin C →

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