GNC Mega Men Diabetic Support supplement bottle

GNC

Mega Men Diabetic Support Review

Q: Is GNC a trustworthy supplement brand?

GNC receives a brand trust score of 96/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1935 and headquartered in Pittsburgh, Pennsylvania, USA, the company offers 1590 products in their lineup. Note: GNC has 34 historical regulatory incidents on record, which are factored into the trust score.

What We Researched

· 39 inactive ingredients decoded · 10 brand certifications checked · Page generated: Sep 2026

Product Score Poor

Brand Score Excellent

Two independent scores — the product and the brand behind it, never blended into one number. See our methodology.

Product Analysis

Transparency Fair

Supplement Facts

No supplement facts data available.

Bioavailability N/A

Absorption Rating

No ingredient forms matched our reference database.

Other Ingredients Poor

Fillers & Additives

/Microcrystalline Cellulose
Hydroxypropyl Methylcellulose
Hydroxypropyl Cellulose
Alpha-carotene
BHA/BHT (Preservative) Medium
Calcium Silicate
Caramel Color
Cellulose
Choline Bitartrate
Corn Starch
Cryptoxanthin
Dextrin
Ethyl Vanillin (Artificial Flavor)
Fumaric Acid
Gelatin (Porcine & Fish)
Glucose Syrup
Gum Arabic
Magnesium Stearate Vegetable Source
Maltodextrin
Mannitol
Medium Chain Triglycerides
Methyl Paraben (Preservative)
Methylcellulose
Mixed Carotenoids
Mixed Tocopherols
Modified Corn Starch
Polyethylene Glycol Low
Polyglycerol Fatty Acid Esters
Polysaccharides
Polysorbate 80 Medium
Propyl Paraben
Sodium Aluminum Silicate
Sodium Ascorbate
Sodium Carboxymethylcellulose
Sodium Chloride
Titanium Dioxide (Mineral Whitener) High
Vegetable Acetoglycerides
Vegetable Oil
Vitamin C Palmitate

Efficacy N/A

Dosage Analysis

Dosage data not available for assessment.

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

/Microcrystalline Cellulose Unknown

Hydroxypropyl Methylcellulose Safe

It is used as a coating for tablets and capsules.

Hydroxypropyl Cellulose Safe

Binds tablet ingredients and can form tablet coatings.

Alpha-carotene Unknown

BHA/BHT (Preservative) Unknown

Calcium Silicate Safe

Prevents ingredient clumping during manufacturing.

Caramel Color Generally_safe

It provides a brown color to the product.

Cellulose Safe

Provides bulk and structure in tablets and capsules.

Choline Bitartrate Generally_safe

It is used to supplement choline intake.

Corn Starch Generally_safe

It is used as a filler, binder, or thickener.

Cryptoxanthin Unknown

Dextrin Generally_safe

It is used as a filler, binder, or coating agent.

Ethyl Vanillin (Artificial Flavor) Unknown

Fumaric Acid Generally_safe

It is used as an acidity regulator or flavoring agent.

Gelatin (Porcine & Fish) Unknown

Glucose Syrup Generally_safe

It is used as a sweetener and binder.

Gum Arabic Safe

It is used as a thickener, binder, or emulsifier.

Magnesium Stearate Vegetable Source Unknown

Maltodextrin Generally_safe

Helps carry and stabilize active ingredients. Provides bulk.

Mannitol Generally_safe

It is used as a sweetener, filler, and flow agent.

Medium Chain Triglycerides Safe

Enhances absorption of fat-soluble vitamins.

Methyl Paraben (Preservative) Unknown

Methylcellulose Generally_safe

It is used as a thickener or binder.

Mixed Carotenoids Unknown

Mixed Tocopherols Safe

Prevents oxidation and rancidity in oil-based supplements.

Modified Corn Starch Generally_safe

It is used as a thickener or binder.

Polyethylene Glycol Caution

It is used as a binder, coating agent, or to improve solubility.

Polyglycerol Fatty Acid Esters Unknown

Polysaccharides Unknown

Polysorbate 80 Caution

Helps mix oil and water-based ingredients.

Propyl Paraben Unknown

Sodium Aluminum Silicate Unknown

Sodium Ascorbate Safe

It helps to stabilize the pH and prevent oxidation.

Sodium Carboxymethylcellulose Generally_safe

It is used as a thickener, binder, or stabilizer.

Sodium Chloride Safe

Provides sodium, stabilizes formulations.

Titanium Dioxide (Mineral Whitener) Unknown

Vegetable Acetoglycerides Unknown

Vegetable Oil Generally_safe

It can be used as a carrier or emollient.

Vitamin C Palmitate Unknown

Brand Trust Report

Certifications

10 certifications

Informed Sport Source available Primary evidence

Nsf Certified For Sport Source available Primary evidence

Clean Label Project Source available Primary evidence

Labdoor Source available Primary evidence

Consumerlab Source available Primary evidence

Fda Gmp Inspections Source available Primary evidence

Usda Organic Source available Primary evidence

Vegan Certified Source available Primary evidence

Nsf Gmp Source available Primary evidence

Informed Choice Supporting evidence unavailable checked 2026-05-05

Transparency

5 claims

Third Party Testing Claim — Verified Evidence available Evidence

Testing Lab Disclosure — Verified Evidence available Evidence

In House Testing — Claimed Brand claim; evidence unavailable

Contains Proprietary Blend — True Brand claim; evidence unavailable checked 2026-05-05

Violation History

34 incidents

Prop 65 Not specified on product pageOngoing Source available Primary source

Recall GNC Women's 30+ Vitapak2025-06-13 Source available Primary source

Recall GNC Women's 30+ Vitapak2025-06-09 Source available Primary source

Recall GNC Women's 30+ Vitapak2025-06-05 Source available Primary source

Recall GNC Women's 30+ Vitapak2025-04-25 Source available Primary source

Lawsuit Misrepresentation of the amount of elemental magnesium in 'Super Magnesium' supplements.2024 Source available Primary source

Lawsuit Mislabeled magnesium content in 'Super Magnesium' supplements.2024 Source available Primary source

Lawsuit Misrepresentation of magnesium content in 'Super Magnesium' supplements.2024 Source available Primary source

Recall GNC Women's Ultra Mega, Women's Ultra Mega Active, Women's Ultra Mega Energy and Metabolism, and Prenatal Formula with Iron2023-01-12 Source available Primary source

Lawsuit Falsely advertising 'Total Lean' protein bars as 'lean'.2023 Source available Primary source

Lawsuit Selling Vitamin E Skin Oil that was primarily composed of vegetable oil.2020 Source available Primary source

Lawsuit Selling Vitamin E Skin Oil that was mostly vegetable oil.2020 Source available Primary source

Prop 65 Lead, Cadmium2019-02-07 Source available Primary source

Prop 65 Lead and/or Cadmium2019-02-07 Source available Primary source

Prop 65 Lead, Cadmium2019-02-07 Source available Primary source

Prop 65 lead and/or cadmium2019-02-07 Source available Primary source

Lawsuit Deceptively labeling dietary supplements as if they have FDA approval.2019 Source available Primary source

Lawsuit Deceptively advertising fake markdowns online to mislead consumers into thinking items were on 'sale.'2019 Source available Primary source

Lawsuit Deceptively labeling dietary supplements regarding FDA approval and failing to include required disclaimers.2019 Source available Primary source

Lawsuit Using fake 'original' prices to deceive customers.2019 Source available Primary source

Recall Women's Iron Complete Dietary Supplement 60-count caplets2018-12-19 Source available Primary source

Prop 65 Lead2018-10-12 Source available Primary source

Recall Various GNC Women's Multivitamins2018-01-04 Source available Primary source

Recall GNC Women's Ultra Mega Time Release2016-11-18 Source available Primary source

Recall GNC Women's Ultra Mega Time Release 180-count2016-11-16 Source available Primary source

Lawsuit Knowingly selling products containing unlawful synthetic chemicals (picamilon, BMPEA, and acacia rigidula).2016 Source available Primary source

Lawsuit Unfair discontinuation of the Gold Card discount program.2016 Source available Primary source

Fda Warning Inclusion of unapproved dietary ingredient Beta-methylphenethylamine (BMPEA) in products.2015-04-01 Source available Primary source

Lawsuit Mislabeling of herbal supplements2015 Source available Primary source

Lawsuit Selling products containing illegal synthetic ingredients.2015 Source available Primary source

Related Supplements

Tru Niagen Tru Niagen Pro 1000 mg

Product 100 Brand 100

Jamieson Extra Strength D3 2500 IU

Product 100 Brand 100

Gaia Herbs Hibiscus Flower Liquid Phyto-Caps

Product 100 Brand 100

GNC Tart Cherry

Product 100 Brand 96

GNC Creatine Monohydrate (Blue Raspberry

Product 100 Brand 96

GNC Magnesium 250 mg (Strawberry

Product 100 Brand 96

Frequently Asked Questions

Is GNC Mega Men Diabetic Support a good supplement?

GNC Mega Men Diabetic Support received a product quality score of 59/100 in GoodSupp's independent analysis, indicating several areas of concern that consumers should review. with 45 servings per container. Of the 39 inactive ingredients, 21 are rated safe and 2 ingredients are flagged for review. The manufacturer, GNC, holds a brand trust score of 96/100.

Is GNC Mega Men Diabetic Support safe to take?

GoodSupp reviewed the inactive-ingredient data available for GNC Mega Men Diabetic Support. Of 39 inactive ingredients, 21 are rated safe. 2 ingredients are flagged for review: Polyethylene Glycol, Polysorbate 80. 'Caution' doesn't mean dangerous — it indicates the ingredient has some considerations worth being aware of, such as potential sensitivities or ongoing research. This label analysis cannot determine whether the product is safe for a particular person, and source labels may change. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.

Is GNC a trustworthy supplement brand?

GNC receives a brand trust score of 96/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1935 and headquartered in Pittsburgh, Pennsylvania, USA, the company offers 1590 products in their lineup. Note: GNC has 34 historical regulatory incidents on record, which are factored into the trust score.

Scan Any Supplement Instantly

Download GoodSupp to scan barcodes, check ingredient safety, and find the best supplements for your needs.

Download on App Store Browse All Supplements

Disclaimer: GoodSupp provides independent supplement quality analysis for informational purposes only. Scores are generated algorithmically based on ingredient profiles, brand certifications, and public records — read our methodology. This is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Product data is sourced from manufacturer labels and public databases. GoodSupp is not affiliated with any supplement brand.