GC-MSM 3550
100/100
This product looks safe
- No ingredients exceed tolerable upper intake levels
- 36% 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
36%
Evidence Coverage
Supplement Facts — Evidence Check
Vitamin C
100 mg
(167% DV)
50 IU
(167% DV)
✅ 2.2× RDA — within safe limits
📚 177 studies (Tier A: 3, B: 90)
100 mg
(1000% DV)
📊 20.0× RDA — above typical dose
📚 1 studies — no high-quality reviews
2 mg
(100% DV)
✅ Within RDA (0.9× RDA of 2.3 mg)
📚 8 studies — no high-quality reviews
75 mcg
(100% DV)
✅ 1.7× RDA — within safe limits
📚 2 studies — no high-quality reviews
Methyl Sulfonyl Methane
1700 mg
1500 mg
📊 Market median: 1000.0mg (1115 products)
📚 22 studies (Tier A: 0, B: 9)
250 mg
📊 Market median: 600.0mg (79 products)
📚 24 studies (Tier A: 0, B: 6)
100 mg
📊 Market median: 1000.0mg (1115 products)
📚 22 studies (Tier A: 0, B: 9)
L-Cysteine
100 mg
Green Shell Mussel
50 mg
20 mg
📊 Market median: 100.0mg (173 products)
10 mg
📊 Market median: 600.0mg (7 products)
📚 39 studies (Tier A: 2, B: 13)
L-Glutathione
4 mg
Other Ingredients
Gelatin
Vegetable Lubricant
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)
Product Information
📋 Directions for Use
Directions: Four capsules daily, or more, as directed by a health care professional.
⚠️ Warnings & Precautions
Pregnant and/or lactating women should consult their physician prior to use.
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.
Contains: Crustacean shellfish (crab and shrimp).
🧪 Formulation Notes
Progressive Laboratories manufactured this product in its 3rd party GMP-inspected facility. (Good Manufacturing Practices)
Glucosamine, Chondroitin Sulfate, MSM and Hyaluronic Acid
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 00762 5
DSLD Entry Date
2022-02-23
Product Type
Other Combinations
Form
Capsule
DSLD ID
261763
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 for the primary prevention of cardiovascular disease
A
Does Vitamin C Supplementation Provide a Protective Effect in Periodontal Health? A Systematic Review and Meta-Analysis
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