ProHealth Longevity Methyl B-12, 1,000 mcg, 60 Sublingual Tablets supplement bottle
ProHealth Longevity

Methyl B-12, 1,000 mcg, 60 Sublingual Tablets

What We Researched
2 active ingredients analyzed · 7 inactive ingredients decoded · 1 brand certification checked · 1 retailer compared · Last updated: Mar 2026
87
Product Score Good
78
Brand Score Fair

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Vitamin B12 (as Methylcobalamin) 1000 mcg 41667%
Stevia Leaf Extract 2 mg †
Bioavailability Excellent

Absorption Rating

  • Vitamin B12 (as Methylcobalamin) Good
  • Stevia Leaf Extract Good
Other Ingredients Excellent

Fillers & Additives

  • Microcrystalline Cellulose
  • Stearic Acid
  • Magnesium Stearate
  • Silicon Dioxide
  • Citric Acid
  • Neosorb®
  • Natural Flavor
Efficacy Fair

Dosage Analysis

  • Vitamin B12 (as Methylcobalamin) 1000 mcg Effective
  • Stevia Leaf Extract 2 mg Under-dosed

Supplement Facts

Ingredient Amount % Daily Value
Vitamin B12 (as Methylcobalamin) 1000 mcg 41667%
Stevia Leaf Extract 2 mg †

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Microcrystalline Cellulose Safe

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

Stearic Acid Safe

Helps ingredients flow smoothly through manufacturing equipment.

Magnesium Stearate Safe

Prevents ingredients from sticking to manufacturing equipment during tableting.

Silicon Dioxide Safe

Prevents clumping and ensures consistent dosing.

Citric Acid Safe

Adds tartness and acts as a natural preservative. Also aids in ingredient stability.

Neosorb® Unknown
Natural Flavor Safe

Improves taste of chewable, gummy, or liquid supplements.

Price Comparison

iHerb $9.49 $0.16 / serving
Best Price

Price History

Tracked across major retailers. Updated periodically.

$11$10$9$8$7 Mar 12 $9.49
iHerb

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

Brand Trust Report
ProHealth Longevity

Founded 1988 · Carpinteria, CA, USA · 84 products · prohealth.com/

Certifications

1 certification
Fda Gmp Inspections Verified Source

Transparency

4 claims
Third Party Testing Claim — Verified Source
Coa Availability — Verified Source
Testing Lab Disclosure — Claimed

Violation History

2 incidents
Fda Warning Misbranded drug due to claims to treat, mitigate, cure, or prevent disease.2021-02-18Source
Lawsuit Deceptively marketing and selling a misbranded product.2021Source
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Frequently Asked Questions
Is ProHealth Longevity Methyl B-12, 1 a good supplement?

ProHealth Longevity Methyl B-12, 1,000 mcg, 60 Sublingual Tablets received a product quality score of 87/100 in GoodSupp's independent analysis, indicating strong overall quality. The product contains 2 active ingredients with 60 servings per container. Of the 7 inactive ingredients, 6 are rated safe and 0 are flagged for review. The manufacturer, ProHealth Longevity, holds a brand trust score of 78/100 with 1 verified certifications including Fda Gmp Inspections.

What are the ingredients in ProHealth Longevity Methyl B-12, 1?

ProHealth Longevity Methyl B-12, 1 contains 2 active ingredients: Vitamin B12 (as Methylcobalamin) (1000 mcg), Stevia Leaf Extract (2 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 ProHealth Longevity Methyl B-12, 1 safe to take?

ProHealth Longevity Methyl B-12, 1,000 mcg, 60 Sublingual Tablets 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 ProHealth Longevity a trustworthy supplement brand?

ProHealth Longevity receives a brand trust score of 78/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1988 and headquartered in Carpinteria, CA, USA, the company offers 84 products in their lineup. They hold 1 verified certifications including Fda Gmp Inspections. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: ProHealth Longevity 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. 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.