Nature Made B12 1000 mcg supplement bottle
Nature Made

B12 1000 mcg Review

What We Researched
2 active ingredients analyzed · 6 inactive ingredients decoded · 5 brand certifications checked · Last updated: Aug 2026
75
Product Score Fair
95
Brand Score Excellent

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

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Vitamin B12 (as Cyanocobalamin) 1000 mcg 41667%
Calcium (as Dibasic Calcium Phosphate) 120 mg 10%
Bioavailability Fair

Absorption Rating

  • Vitamin B12 (as Cyanocobalamin) Fair
  • Calcium (as Dibasic Calcium Phosphate) Fair
Other Ingredients Excellent

Fillers & Additives

  • Cellulose Gel
  • Hypromellose
  • Stearic Acid
  • Silicon Dioxide
  • Magnesium Stearate
  • Croscarmellose Sodium
Efficacy Fair

Dosage Analysis

  • Vitamin B12 (as Cyanocobalamin) 1000 mcg Effective
  • Calcium (as Dibasic Calcium Phosphate) 120 mg Under-dosed

Supplement Facts

Ingredient Amount % Daily Value
Vitamin B12 (as Cyanocobalamin) 1000 mcg 41667%
Calcium (as Dibasic Calcium Phosphate) 120 mg 10%

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Cellulose Gel Generally_safe

It is used as a thickening agent to improve the texture of supplements.

Hypromellose Safe

Forms vegetarian capsule shells. Dissolves easily in the stomach.

Stearic Acid Safe

Helps ingredients flow smoothly through manufacturing equipment.

Silicon Dioxide Safe

Prevents clumping and ensures consistent dosing.

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.

Brand Trust Report
Nature Made

Founded 1971 · West Hills, California, USA · 701 products · naturemade.com

Certifications

5 certifications
Consumerlab Verified Source
Labdoor Verified Source
Usp Verified Verified Source
Fda Gmp Inspections Verified Source
NSF Certified Verified

Transparency

5 claims
Third Party Testing Claim — Verified Source
Coa Availability — Claimed Source
In House Testing — Verified Source
Testing Lab Disclosure — True

Violation History

2 incidents
Lawsuit Presence of toxic plastic chemicals in prenatal multivitamins.2025Source
Recall Specific lots of Nature Made Adult Gummies Multi, Multi + Omega-3, Multi for Her plus Omega-3s, and Super B Complex w/C & Folic Acid2016-06-15Source
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Frequently Asked Questions
Is Nature Made B12 1000 mcg a good supplement?

Nature Made B12 1000 mcg received a product quality score of 75/100 in GoodSupp's independent analysis, suggesting some areas that could be improved. The product contains 2 active ingredients with 160 servings per container. Of the 6 inactive ingredients, 5 are rated safe and 0 are flagged for review. The manufacturer, Nature Made, holds a brand trust score of 95/100 with 5 verified certifications including Consumerlab, Labdoor, Usp Verified, Fda Gmp Inspections.

What are the ingredients in Nature Made B12 1000 mcg?

Nature Made B12 1000 mcg contains 2 active ingredients: Vitamin B12 (as Cyanocobalamin) (1000 mcg), Calcium (as Dibasic Calcium Phosphate) (120 mg). Notable high-dose ingredients include Vitamin B12 at 41667% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Nature Made B12 1000 mcg safe to take?

Nature Made B12 1000 mcg has been analyzed for ingredient safety across all its components. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.

Is Nature Made a trustworthy supplement brand?

Nature Made receives a brand trust score of 95/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1971 and headquartered in West Hills, California, USA, the company offers 701 products in their lineup. They hold 5 verified certifications including Consumerlab, Labdoor, Usp Verified, Fda Gmp Inspections. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: Nature Made has 2 historical regulatory incidents on record, which are factored into the trust score.

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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.