🟢 100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 56% of ingredients have research evidence
A Label Compliance Grade

Product Label

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Label Data

2 Capsule(s) Serving Size
30 Servings
Other Combinations Product Type
56% Evidence Coverage

Supplement Facts — Evidence Check

Vitamin C
250 mg (417% DV)
Calcium
250 mg (25% DV)
2 mg (100% DV)
✅ 2.2× RDA — within safe limits 📚 36 studies (Tier A: 0, B: 11)
RDA 0.9mg This product: 2mg UL 10mg
30 mg (200% DV)
✅ 2.7× RDA — within safe limits 📚 258 studies (Tier A: 6, B: 134)
RDA 11mg This product: 30mg UL 40mg
📊 Market median: 1000.0mg (1115 products) 📚 22 studies (Tier A: 0, B: 9)
This product: 1000mg
250 mg
📊 Market median: 200.0mg (136 products) 📚 3 studies — no high-quality reviews
This product: 250mg
Boswellin
250 mg
100 mg
📊 Market median: 450.0mg (254 products) 📚 240 studies (Tier A: 0, B: 100)
This product: 100mg
📊 Market median: 600.0mg (79 products) 📚 24 studies (Tier A: 0, B: 6)
This product: 25mg

Other Ingredients

Gelatin Glycerin Silica Water

Label Claims — Verification

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

Target Groups

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

Product Information

📋 Directions for Use

Recommended Usage: As a dietary supplement, take two capsules twice daily or as recommended by a physician or health care practitioner.

⚠️ Warnings & Precautions

Pregnant or lactating women should consult their health care professional.

Do not use if tamper-evident seal is broken or missing.

KEEP OUT OF THE REACH OF CHILDREN.

🧪 Formulation Notes

This unique formula includes glucosamine sulfate, a natural compound present in joint cartilage.

ARTH-9 is fortified with vitamin C, calcium and zinc l-monomethionine to aid in tissue repair, bromelain to help maintain joint flexibility and chondroitin sulfate, another important component of articular cartilage.

Contains no yeast, dairy, eggs, gluten, corn, soy or wheat, sugar, starch, salt, preservatives or artificial color, flavor or fragrance.

Additional Information

OPTIMAL NUTRITIONAL SUPPORT

ARTH-9 is a scientifically designed formula that provides essential nutrients for bone, joint, ligament and cartilage function.

This aminomonosaccharide has been shown to play an integral role in maintaining healthy connective tissue and cartilage.

The gelatin capsules are hypoallergenic.

OPTI L-ZINC(R)

PHYSICIAN FORMULATED

A Comprehensive Formula for Bone Joint, Ligament & Cartilage

Product Details

UPC / SKU 7 08429 90120 4
DSLD Entry Date 2015-02-25
Product Type Other Combinations
Form Capsule
Brand Rx Vitamins
DSLD ID 42049
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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