GNC Methyl B-12 2500 mcg supplement bottle
GNC

Methyl B-12 2500 mcg

What We Researched
2 active ingredients analyzed · 11 inactive ingredients decoded · 5 brand certifications checked · 2 retailers compared · Last updated: Mar 2026
59
Product Score Poor
88
Brand Score Good

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Vitamin B12 (as Methylcobalamin) 2500 mcg 104167%
Calcium 135 mg 10%
Bioavailability Excellent

Absorption Rating

  • Vitamin B12 (as Methylcobalamin) Good
  • Calcium Good
Other Ingredients Poor

Fillers & Additives

  • Dicalcium Phosphate
  • Microcrystalline Cellulose
  • Hydroxypropyl Methylcellulose
  • Silicon Dioxide
  • Stearic Acid
  • Titanium Dioxide High
  • Magnesium Stearate
  • Croscarmellose Sodium
  • Polyethylene Glycol Low
  • Talc High
  • Carnauba Wax
Efficacy Poor

Dosage Analysis

  • Vitamin B12 (as Methylcobalamin) 2500 mcg High
  • Calcium 135 mg Under-dosed

Supplement Facts

Ingredient Amount % Daily Value
Vitamin B12 (as Methylcobalamin) 2500 mcg 104167%
Calcium 135 mg 10%

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Dicalcium Phosphate Safe

Serves as both a filler and a supplemental source of calcium and phosphorus.

Microcrystalline Cellulose Safe

Adds bulk to small-dose supplements to make tablets/capsules a manageable size.

Hydroxypropyl Methylcellulose Safe

It is used as a coating for tablets and capsules.

Silicon Dioxide Safe

Prevents clumping and ensures consistent dosing.

Stearic Acid Safe

Helps ingredients flow smoothly through manufacturing equipment.

Titanium Dioxide Caution

Used as a whitening agent in tablet coatings and capsules.

Magnesium Stearate Safe

Prevents ingredients from sticking to manufacturing equipment during tableting.

Croscarmellose Sodium Safe

Helps tablets break apart and dissolve quickly in the stomach.

Polyethylene Glycol Caution

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

Talc Avoid

It is used to improve powder flow and prevent clumping.

Carnauba Wax Safe

Provides a glossy, protective coating on tablets.

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$28$27$26$25$24 Mar 12 $25.99
GNC

Prices shown at time of last check. Click a retailer to see current price. GoodSupp is not affiliated with any retailer.

Brand Trust Report
GNC

Founded 1935 · Pittsburgh, Pennsylvania, USA · 200 products · gnc.com

Certifications

5 certifications
Informed Sport Verified Source
Consumerlab Verified Source
Fda Gmp Inspections Verified Source
Usda Organic Verified Source
Vegan Certified Verified Source

Transparency

3 claims
Third Party Testing Claim — Verified Source
Testing Lab Disclosure — Verified Source
In House Testing — Claimed
Related Supplements
Frequently Asked Questions
Is GNC Methyl B-12 2500 mcg a good supplement?

GNC Methyl B-12 2500 mcg received a product quality score of 59/100 in GoodSupp's independent analysis, indicating several areas of concern that consumers should review. The product contains 2 active ingredients with 100 servings per container. Of the 11 inactive ingredients, 8 are rated safe and 2 are flagged for review. The manufacturer, GNC, holds a brand trust score of 88/100 with 5 verified certifications including Informed Sport, Consumerlab, Fda Gmp Inspections, Usda Organic.

What are the ingredients in GNC Methyl B-12 2500 mcg?

GNC Methyl B-12 2500 mcg contains 2 active ingredients: Vitamin B12 (as Methylcobalamin) (2500 mcg), Calcium (135 mg). Notable high-dose ingredients include Vitamin B12 at 104167% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is GNC Methyl B-12 2500 mcg safe to take?

GNC Methyl B-12 2500 mcg has been analyzed for ingredient safety across all its components. Of 11 inactive ingredients, 8 are rated safe. 2 ingredients are flagged for review: Titanium Dioxide, Polyethylene Glycol. 'Caution' doesn't mean dangerous — it indicates the ingredient has some considerations worth being aware of, such as potential sensitivities or ongoing research. 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 88/100 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 200 products in their lineup. They hold 5 verified certifications including Informed Sport, Consumerlab, Fda Gmp Inspections, Usda Organic. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. No regulatory violations or FDA warning letters were found in our research.

Scan Any Supplement Instantly

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

Disclaimer: GoodSupp provides independent supplement quality analysis for informational purposes only. Scores are generated algorithmically based on ingredient profiles, brand certifications, and public records. 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.