🟢 100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 29% of ingredients have research evidence
B Label Compliance Grade

Product Label

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Label Data

4 Yellow Tablet(s) Serving Size
Other Combinations Product Type
29% Evidence Coverage

Supplement Facts — Evidence Check

Vitamin C
30 mg (50% DV)
Sodium
130 mg (5% DV)
📊 Market median: 1000.0mg (1115 products) 📚 22 studies (Tier A: 0, B: 9)
This product: 1500mg
📊 Market median: 600.0mg (79 products) 📚 24 studies (Tier A: 0, B: 6)
This product: 1200mg
MSM
250 mg
📊 Market median: 1000.0mg (2 products)
This product: 250mg
Fast-Acting Proprietary Blend (Herb/Botanical)
250 mg
📊 Market median: 100.0mg (173 products)
Median 100.0mg This product: 5mg

Other Ingredients

Cellulose Titanium Dioxide Vegetable Acetoglycerides natural Vanilla flavor Riboflavin Sucralose

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

DIRECTIONS: As a dietary supplement, take the contents of one packet daily with a meal.

To ensure a complete nutritional program, take daily with these GNC products: - Premium GNC Multivitamin - Ultra Probiotic Complex 25 - CoQ-10 - SuperFoods Whole Foods Blend

⚠️ Warnings & Precautions

CONTAINS Crustaceans (Shrimp).

WARNING: Consult your physician prior to using this product is you are pregnant, nursing, taking medication, or have a medical condition.

Discontinue use two weeks prior to surgery.

KEEP OUT OF THE REACH OF CHILDREN.

🧪 Formulation Notes

CONTAINS Crustaceans (Shrimp).

TriFlex(TM) Fast-Acting – This maximum strength, fast-acting comfort formula features the full potency, clinically studied doses of glucosamine and chondroitin joint comfort and flexibility. Glucosamine and chondroitin help preserve joint function and rebuild cartilage. It combines two important structural components of joint cartilage, MSM and hyaluronic acid (HA), which helps with cushioning joints and maintains the elastic integrity of skin. It also includes 30 mg of vitamin C. Vitamin C is involved in the synthesis of collagen.

No Sugar, No Artificial Colors, No Preservatives, No Wheat, No Gluten, No Dairy, Yeast Free.

- Comprehensive Vitapak(R) program that supports improved join health with TriFlex(TM) Fast-Acting, Triple Strength Fish Oil, White Willow Bark and MSM

Additional Information

GNC Quality Commitment For more than 75 years, GNC has been the leader in the development and manufacture of dietary supplements and is committed to producing the most superior products. We use only the highest quality ingredients manufactured under the strictest quality controls. Every raw material used is tested to ensure its purity and potency. Each product is dated and then shipped immediately to our stores to ensure that you are purchasing the freshest supplements available. GNC Guarantee If you are not 100% completely satisfied, return the unused portion of the product with your receipt to a GNC store within 30 days. Our trained sales staff will either refund your purchase price or, if you prefer, assist you in finding a replacement product to help you LIVE WELL.

CODE 281812 DNG

{Tablet} ACTUAL SIZE

Store in a cool, dry place.

- Maximum strength, fast-acting joint comfort - works in days - Rebuilds cartilage and lubricates joints - Supports natural anti-inflammatory response

Product Details

DSLD Entry Date 2015-04-24
Product Type Other Combinations
Form Tablet or Pill
Brand GNC
Bundle TriFlex Complete Vitapak
DSLD ID 44711
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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