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Arthro-Syn

product on market Capsule Douglas Laboratories Safety: 98/100
98/100

This product looks safe

  • Niacin/Niacinamide: 100mg is 2.9× the Tolerable Upper Intake Level (35mg)
  • Manganese: 100mg is 9.1× the Tolerable Upper Intake Level (11mg)
  • 46% of ingredients have research evidence
D Label Compliance Grade

What the Evidence Says

✨ AI-generated · Qwen 3.6 · methodology

This profile contains essential vitamins A, C, E, and B-complex, which are supported by strong evidence for their roles in antioxidant protection and cellular metabolism. These nutrients contribute to overall systemic health and tissue maintenance. The formulation maintains a high safety score of 98/100.

AI-generated summary based on research evidence. Not medical advice.

Alerts

Safety Alerts

Niacin/Niacinamide: 100mg is 2.9× the Tolerable Upper Intake Level (35mg)

Manganese: 100mg is 9.1× the Tolerable Upper Intake Level (11mg)

Label

Product Label

Label for Arthro-Syn
Open Full PDF View on NIH DSLD →
Details

Label Data

4 Capsule(s)
Serving Size
30
Servings
Other Combinations
Product Type
46%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

Vitamin A
2500 IU (50% DV)
Vitamin C
500 mg (833% DV)
100 IU (333% DV)
4.5× RDA — above typical dose (UL: 1000 mg) 179 studies (A:3, B:90)
40 mg (2667% DV)
33.3× RDA — above typical dose 76 studies (A:0, B:33)
20 mg (1177% DV)
15.4× RDA — above typical dose 13 studies (A:0, B:1)
100 mg (500% DV)
Exceeds UL by 2.9× (UL: 35 mg) 196 studies (A:5, B:63)
50 mg (2500% DV)
38.5× RDA — above typical dose (UL: 100 mg) 114 studies (A:3, B:35)
200 mcg (50% DV)
Within RDA (0.5× RDA) 226 studies (A:10, B:105)
50 mcg (833% DV)
20.8× RDA — above typical dose 139 studies (A:1, B:44)
50 mg (500% DV)
10.0× RDA — above typical dose 2 studies — no high-quality reviews
Calcium
125 mg (13% DV)
125 mg (31% DV)
Within RDA (0.3× RDA) 316 studies (A:8, B:159)
25 mg (167% DV)
2.3× RDA — within safe limits 263 studies (A:6, B:134)
50 mcg (71% DV)
Within RDA (0.9× RDA) 173 studies (A:0, B:67)
2 mg (100% DV)
2.2× RDA — within safe limits 37 studies (A:0, B:11)
100 mg (5000% DV)
Exceeds UL by 9.1× (UL: 11 mg) 9 studies — no high-quality reviews
100 mcg (83% DV)
2.9× RDA — within safe limits 199 studies (A:1, B:55)
Potassium
25 mg (1% DV)
Hesperidin Complex
25 mg
25 mg
Market median: 500.0mg (19 products)
150 mg
Market median: 500.0mg (283 products) 174 studies (A:0, B:62)
9 mg
Market median: 125.0mg (294 products) 38 studies (A:1, B:7)
20 mg
Market median: 550.0mg (217 products) 29 studies (A:0, B:5)
10 mg
Market median: 500.0mg (9 products) 7 studies — no high-quality reviews
L-Cysteine
75 mg
L-Histidine
25 mg
DL-Phenylalanine
100 mg
Market median: 750.0mg (447 products) 393 studies (A:18, B:204)
Trypsin
25 mg
Chymotrypsin
25 mcg
150 mg
Market median: 200.0mg (136 products) 3 studies — no high-quality reviews
Bovine Tracheal Cartilage
100 mg
Papain
25 mg
Raw Veal Bone
25 mg
Yucca extract
100 mg

Other Ingredients

Cellulose Gelatin Vegetable Stearate
Claims

Label Claims — Verification

Unverified All Other
Info

Product Information

Directions for Use

Suggested Usage: As a dietary supplement, adults take 4 capsules daily with meals, or as directed by your healthcare professional.

Warnings & Precautions

KEEP OUT OF REACH OF CHILDREN.

Tamper resistant package, do not use if outer seal is missing.

Formulation Notes

This product contains NO yeast, wheat gluten, soy protein, milk/dairy, corn, sodium, sugar, starch, artificial coloring, preservatives or flavoring.

Additional Information

For optimal storage conditions, store in a cool, dry place. (59°-77°F/15°-25°C) (35-65% relative humidity)

Formula #7081

Metadata

Product Details

UPC / SKU3 10539 00493 7
DSLD Entry Date2012-04-26
Product TypeOther Combinations
FormCapsule
BrandDouglas Laboratories
DSLD ID8127
Data Updated2026-04-11
Research

Research Evidence

337
Research Sources
54
Avg Quality
161
Meta Analysis
68
Systematic Review
51
Rct
48
Clinical Trial
2
Other
2
Regulatory Source
1
Narrative Review
1
Cochrane Review
1
Guideline
1
Openfda Safety
A Vitamin A supplementation for preventing morbidity and mortality in children from six months to five years of age
Meta Analysis The Cochrane database of systematic reviews 2017 PubMed DOI
A Vitamin A supplementation for the prevention of morbidity and mortality in infants six months of age or less
Meta Analysis The Cochrane database of systematic reviews 2011 PubMed DOI
A Vitamin A supplementation for reducing the risk of mother-to-child transmission of HIV infection
Meta Analysis The Cochrane database of systematic reviews 2011 PubMed DOI
A Vitamin A supplements for preventing mortality, illness, and blindness in children aged under 5: systematic review and meta-analysis
Meta Analysis BMJ (Clinical research ed.) 2011 PubMed DOI
A Fortification of staple foods with vitamin A for vitamin A deficiency
Systematic Review The Cochrane database of systematic reviews 2019 PubMed DOI
A Vitamin A supplementation for the prevention of morbidity and mortality in infants one to six months of age
Narrative Review The Cochrane database of systematic reviews 2016 PubMed DOI
A Vitamin A and fish oils for preventing the progression of retinitis pigmentosa
Meta Analysis The Cochrane database of systematic reviews 2020 PubMed DOI
A Exercise training-induced changes in exerkine concentrations may be relevant to the metabolic control of type 2 diabetes mellitus patients: A systematic review and meta-analysis of randomized controlled trials
Meta Analysis Journal of sport and health science 2023 PubMed DOI
A Food fortification with multiple micronutrients: impact on health outcomes in general population
Meta Analysis The Cochrane database of systematic reviews 2019 PubMed DOI
A Oral vitamin A supplements to prevent acute upper respiratory tract infections in children up to seven years of age
Meta Analysis The Cochrane database of systematic reviews 2024 PubMed DOI
View all evidence for Vitamin A →
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This product page is for informational purposes only and does not constitute medical advice. Always consult your healthcare provider before taking any supplement.