tnvitamins B12 5000 mcg Sublingual supplement bottle
tnvitamins

B12 5000 mcg Sublingual Review

What We Researched
1 active ingredient analyzed · 10 inactive ingredients decoded · 1 brand certification checked · Last updated: Aug 2026
93
Product Score Excellent
77
Brand Score Fair

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 Methylcobalamin) 5000 mcg 208333%
Bioavailability Excellent

Absorption Rating

  • Vitamin B12 (as Methylcobalamin) Good
Other Ingredients Excellent

Fillers & Additives

  • Mannitol
  • Natural Flavors
  • Cellulose
  • Crospovidone
  • Beet Root Powder
  • Dextrose
  • Stearic Acid
  • Vegetable Magnesium Stearate
  • Sucralose
  • Silica
Efficacy Very Good

Dosage Analysis

  • Vitamin B12 (as Methylcobalamin) 5000 mcg High

Supplement Facts

Ingredient Amount % Daily Value
Vitamin B12 (as Methylcobalamin) 5000 mcg 208333%

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Mannitol Generally_safe

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

Natural Flavors Safe

Improves taste of chewable, gummy, or liquid supplements.

Cellulose Safe

Provides bulk and structure in tablets and capsules.

Crospovidone Generally_safe

It is used as a binder to help tablets or capsules disintegrate.

Beet Root Powder Generally_safe

It is used as a natural coloring agent.

Dextrose Generally_safe

It is used as a filler, sweetener, or to improve the flow of powders.

Stearic Acid Safe

Helps ingredients flow smoothly through manufacturing equipment.

Vegetable Magnesium Stearate Safe

Prevents ingredients from sticking to equipment. Derived from vegetable sources.

Sucralose Generally_safe

Adds sweetness to chewables, gummies, and powdered supplements without calories.

Silica Safe

Prevents ingredients from clumping and improves powder flow.

Brand Trust Report
tnvitamins

Founded 1979 · Deer Park, NY, USA · 136 products · tnvitamins.com/

Certifications

1 certification
Consumerlab Verified Source

Transparency

2 claims
Third Party Testing Claim — Claimed Source

Violation History

1 incident
Fda Warning Significant violations of Current Good Manufacturing Practice (CGMP) regulations for dietary supplements.2017-08-16Source
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Frequently Asked Questions
Is tnvitamins B12 5000 mcg Sublingual a good supplement?

tnvitamins B12 5000 mcg Sublingual received a product quality score of 93/100 in GoodSupp's independent analysis, placing it in the top tier of supplements we've analyzed. The product contains 1 active ingredients Of the 10 inactive ingredients, 5 are rated safe and 0 are flagged for review. The manufacturer, tnvitamins, holds a brand trust score of 77/100 with 1 verified certifications including Consumerlab.

What are the ingredients in tnvitamins B12 5000 mcg Sublingual?

tnvitamins B12 5000 mcg Sublingual contains 1 active ingredients: Vitamin B12 (as Methylcobalamin) (5000 mcg). Notable high-dose ingredients include Vitamin B12 at 208333% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is tnvitamins B12 5000 mcg Sublingual safe to take?

tnvitamins B12 5000 mcg Sublingual 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 tnvitamins a trustworthy supplement brand?

tnvitamins receives a brand trust score of 77/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1979 and headquartered in Deer Park, NY, USA, the company offers 136 products in their lineup. They hold 1 verified certifications including Consumerlab. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: tnvitamins has 1 historical regulatory incident 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.