🟢 100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 54% of ingredients have research evidence
A Label Compliance Grade

Product Label

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Label Data

4 Capsule(s) Serving Size
30 Servings
Other Combinations Product Type
54% Evidence Coverage

Supplement Facts — Evidence Check

Total Carbohydrates
1 Gram(s) (1% DV)
Vitamin C
76 mg (127% DV)
262 IU (66% DV)
✅ Within RDA (0.4× RDA of 0.015 mg) 📚 604 studies (Tier A: 16, B: 251)
RDA 0.015mg This product: 0.00655mg UL 0.1mg
105 mcg (131% DV)
✅ Within RDA (0.9× RDA of 0.12 mg) 📚 273 studies (Tier A: 9, B: 175)
RDA 0.12mg This product: 0.105mg
5.9 mg (393% DV)
📊 4.9× RDA — above typical dose 📚 76 studies (Tier A: 0, B: 33)
RDA 1.2mg This product: 5.9mg
6.2 mg (365% DV)
📊 4.8× RDA — above typical dose 📚 12 studies (Tier A: 0, B: 1)
RDA 1.3mg This product: 6.2mg
15 mg (75% DV)
✅ 1.1× RDA — within safe limits 📚 193 studies (Tier A: 5, B: 63)
RDA 14mg This product: 15mg UL 35mg
14.9 mg (745% DV)
📊 11.5× RDA — above typical dose (UL: 100 mg) 📚 113 studies (Tier A: 3, B: 35)
RDA 1.3mg This product: 14.9mg UL 100mg
515 mcg (129% DV)
✅ 1.3× RDA — within safe limits 📚 225 studies (Tier A: 10, B: 105)
RDA 0.4mg This product: 0.515mg UL 1.0mg
17.2 mcg (287% DV)
📊 7.2× RDA — above typical dose 📚 138 studies (Tier A: 1, B: 44)
RDA 0.0024mg This product: 0.0172mg
11.4 mg (114% DV)
✅ 2.3× RDA — within safe limits 📚 1 studies — no high-quality reviews
RDA 5mg This product: 11.4mg
Calcium
630 mg (63% DV)
Iron
3.75 mg (21% DV)
191 mg (48% DV)
📊 Market median: 4002.0mg (1 products) 📚 20 studies (Tier A: 0, B: 2)
This product: 191mg
11.3 mg (75% DV)
✅ Within RDA (1.0× RDA of 11 mg) 📚 258 studies (Tier A: 6, B: 134)
RDA 11mg This product: 11.3mg UL 40mg
72 mcg (103% DV)
✅ 1.3× RDA — within safe limits 📚 172 studies (Tier A: 0, B: 67)
RDA 0.055mg This product: 0.072mg UL 0.4mg
1.1 mg (55% DV)
✅ 1.2× RDA — within safe limits 📚 36 studies (Tier A: 0, B: 11)
RDA 0.9mg This product: 1.1mg UL 10mg
7.5 mg (375% DV)
📊 3.3× RDA — above typical dose (UL: 11 mg) 📚 8 studies — no high-quality reviews
RDA 2.3mg This product: 7.5mg UL 11mg
70 mcg (58% DV)
✅ 2.0× RDA — within safe limits 📚 197 studies (Tier A: 1, B: 55)
RDA 0.035mg This product: 0.07mg
37 mcg (49% DV)
✅ Within RDA (0.8× RDA of 0.045 mg) 📚 2 studies — no high-quality reviews
RDA 0.045mg This product: 0.037mg UL 2mg
Sodium
10 mg (1% DV)
Potassium
72 mg (2% DV)
1.1 mg
📊 Market median: 3.0mg (58 products) 📚 2 studies — no high-quality reviews
This product: 1.1mg UL 20mg
20 mcg
📊 Market median: 0.5mg (6 products) 📚 1 studies (Tier A: 0, B: 1)
This product: 0.02mg UL 1.8mg
Strontium
254 mcg
Ipriflavone
600 mg

Other Ingredients

Gelatin Cellulose Magnesium Stearate Calcium Silica

Label Claims — Verification

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

Target Groups

Adult (18 - 50 Years)

Product Information

📋 Directions for Use

Directions: Use only as directed. Take four capsules daily with a meal.

⚠️ Warnings & Precautions

WARNING: Do not use if safety seal is broken or missing.

Keep out of reach of children.

Accidental overdose of iron-containing products is a leading cause of fatal poisoning in children under six. In case of accidental overdose, call a doctor or poison control center immediately.

🧪 Formulation Notes

WITH STRONTIUM

Additional Information

Since 1932

FRESH QUALITY

FOUR DAILY

Keep your licensed health care practitioner informed when using this product.

Store in a cool, dry place.

4165054 1107

Product Details

UPC / SKU 0 31315 19422 1
DSLD Entry Date 2014-08-26
Product Type Other Combinations
Form Capsule
Brand Thompson
DSLD ID 36497
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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