🟢 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
60 Servings
Other Combinations Product Type
44% Evidence Coverage

Supplement Facts — Evidence Check

Vitamin C
100 mg (166% DV)
12 mg (600% DV)
📊 9.2× RDA — above typical dose (UL: 100 mg) 📚 113 studies (Tier A: 3, B: 35)
RDA 1.3mg This product: 12mg UL 100mg
53 mg (530% DV)
📊 10.6× RDA — above typical dose 📚 1 studies — no high-quality reviews
RDA 5mg This product: 53mg
3.3 mg (22% DV)
✅ Within RDA (0.3× RDA of 11 mg) 📚 258 studies (Tier A: 6, B: 134)
RDA 11mg This product: 3.3mg UL 40mg
0.3 mg (15% DV)
✅ Within RDA (0.3× RDA of 0.9 mg) 📚 36 studies (Tier A: 0, B: 11)
RDA 0.9mg This product: 0.3mg UL 10mg
150 mg
📊 Market median: 500.0mg (223 products) 📚 22 studies (Tier A: 0, B: 1)
This product: 150mg
DL-Phenylalanine
80 mg
Hypothalamus
15 mg
Adrenal
10 mg

Other Ingredients

Rice Flour Vegetable Lubricant Gelatin

Label Claims — Verification

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

Target Groups

Adult (18 - 50 Years) Women (not pregnant or lactating)

Product Information

📋 Directions for Use

Directions: One capsule twice daily, or more, as directed by a health care professional.

⚠️ Warnings & Precautions

Not to be used by pregnant or lactating women.

Tamper evident band around cap and seal on bottle. Do not use if either seal is broken or missing.

Keep out of the reach of children.

🧪 Formulation Notes

Progressive Laboratories manufactured this product in its 3rd party GMP-inspected facility. (Good Manufacturing Practices)

Tyrosine, DL-Phenylalanine, Adrenal, Hypothalamus & Synergists

Additional Information

Sold only for dispensing by a licensed health professional.

GMP Good Manufacturing Practice Certified GMP Compliant 21 CFR 111

Product Details

UPC / SKU 3 51821 00422 8
DSLD Entry Date 2022-02-23
Product Type Other Combinations
Form Capsule
DSLD ID 261624
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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