🟢 90/100

This product looks safe

  • Contains proprietary blend — exact ingredient amounts not disclosed
  • 59% of ingredients have research evidence
A Label Compliance Grade

Product Label

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Safety Alerts

ℹ️ Contains proprietary blend — exact ingredient amounts not disclosed

Label Data

2 Capsule(s) Serving Size
60 Servings
Other Combinations Product Type
59% Evidence Coverage

Supplement Facts — Evidence Check

Vitamin C
80 mg (80% DV)
20 IU (66% DV)
✅ Within RDA (0.9× RDA of 15 mg) 📚 177 studies (Tier A: 3, B: 90)
RDA 15mg This product: 13.4mg UL 1000mg
2 mg (133% DV)
✅ 1.7× RDA — within safe limits 📚 76 studies (Tier A: 0, B: 33)
RDA 1.2mg This product: 2mg
1 mg (58% DV)
✅ Within RDA (0.8× RDA of 1.3 mg) 📚 12 studies (Tier A: 0, B: 1)
RDA 1.3mg This product: 1mg
2 mg (10% DV)
✅ Within RDA (0.1× RDA of 14 mg) 📚 193 studies (Tier A: 5, B: 63)
RDA 14mg This product: 2mg UL 35mg
10 mg (500% DV)
📊 7.7× RDA — above typical dose (UL: 100 mg) 📚 113 studies (Tier A: 3, B: 35)
RDA 1.3mg This product: 10mg UL 100mg
Calcium
100 mg (10% DV)
40 mg (10% DV)
📊 Market median: 4002.0mg (1 products) 📚 20 studies (Tier A: 0, B: 2)
This product: 40mg
12 mg (80% DV)
✅ 1.1× RDA — within safe limits 📚 258 studies (Tier A: 6, B: 134)
RDA 11mg This product: 12mg UL 40mg
Potassium
6 mg (1% DV)
📊 Market median: 600.0mg (79 products) 📚 24 studies (Tier A: 0, B: 6)
This product: 60mg
📊 Market median: 1000.0mg (1115 products) 📚 22 studies (Tier A: 0, B: 9)
This product: 60mg
📊 Market median: 50.0mg (57 products) 📚 17 studies — no high-quality reviews
This product: 16mg UL 50mg
📊 Market median: 303.0mg (42 products)
This product: 6mg
📊 Market median: 80.0mg (20 products) 📚 334 studies (Tier A: 8, B: 183)
This product: 16mg
300 mg
📊 Market median: 500.0mg (143 products)
This product: 300mg
Proprietary Herbal Blend Extract
686 mg

Other Ingredients

Gelatin Sylox Magnesium Stearate

Label Claims — Verification

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

Target Groups

Adult Male (18-50 Years)

Product Information

📋 Directions for Use

Suggested Use: Take 2-4 capsules daily with a full glass of water as a dietary supplement. For best results, take on an empty stomach or before meals.

⚠️ Warnings & Precautions

Keep out of reach of children.

Do not use if seal is broken. CAUTION: As with any product, discontinue immediately if adverse effects occur.

Additional Information

Store in cool, dry place protected from light.

MADE IN U.S.A.

Quality Purity Potency Guaranteed

Lot No.: Exp. Date:

extra strength Special Herbal Formula

SPECIALLY FORMULATED BY DOCTOR T.H. PHAM

Product Details

UPC / SKU 6 40061 21380 5
DSLD Entry Date 2013-09-25
Product Type Other Combinations
Form Capsule
DSLD ID 25838
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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