Life Extension Vitamin B12, Methylcobalamin, 500 mcg, 100 Vegetarian Lozenges supplement bottle
Life Extension

Vitamin B12, Methylcobalamin, 500 mcg, 100 Vegetarian Lozenges

What We Researched
1 active ingredient analyzed · 6 inactive ingredients decoded · 3 brand certifications checked · 3 retailers compared · Last updated: Mar 2026
100
Product Score Excellent
86
Brand Score Good

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Vitamin B12 (as methylcobalamin) 500 mcg 20,833%
Bioavailability Excellent

Absorption Rating

  • Vitamin B12 (as methylcobalamin) Good
Other Ingredients Excellent

Fillers & Additives

  • Mannitol
  • Sorbitol
  • Microcrystalline Cellulose
  • Vegetable Stearate
  • Croscarmellose Sodium
  • Natural Strawberry Flavor
Efficacy Excellent

Dosage Analysis

  • Vitamin B12 (as methylcobalamin) 500 mcg Effective

Supplement Facts

Ingredient Amount % Daily Value
Vitamin B12 (as methylcobalamin) 500 mcg 20,833%

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Mannitol Generally_safe

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

Sorbitol Safe

Provides sweetness and helps retain moisture in chewables.

Microcrystalline Cellulose Safe

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

Vegetable Stearate Safe

Prevents ingredients from sticking to equipment.

Croscarmellose Sodium Safe

Helps tablets break apart and dissolve quickly in the stomach.

Natural Strawberry Flavor Safe

It provides a strawberry flavor to the product.

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$9$8$7$6$5 Mar 12 $6.75$6.56
iHerb
Vitacost

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

Brand Trust Report
Life Extension

Founded 1980 · Fort Lauderdale, Florida, USA · 352 products · lifeextension.com

Certifications

3 certifications
Consumerlab Verified Source
Fda Gmp Inspections Verified Source
Nsf Gmp Verified Source

Transparency

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

Violation History

2 incidents
Prop 65 Lead2018-04-13Source
Fda Warning Making drug claims for dietary supplements, suggesting they can treat, mitigate, or prevent diseases such as breast cancer and Alzheimer's.2017-02-01Source
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Frequently Asked Questions
Is Life Extension Vitamin B12, Methylcobalamin a good supplement?

Life Extension Vitamin B12, Methylcobalamin, 500 mcg, 100 Vegetarian Lozenges received a product quality score of 100/100 in GoodSupp's independent analysis, placing it in the top tier of supplements we've analyzed. The product contains 1 active ingredients Of the 6 inactive ingredients, 5 are rated safe and 0 are flagged for review. The manufacturer, Life Extension, holds a brand trust score of 86/100 with 3 verified certifications including Consumerlab, Fda Gmp Inspections, Nsf Gmp.

What are the ingredients in Life Extension Vitamin B12, Methylcobalamin?

Life Extension Vitamin B12, Methylcobalamin contains 1 active ingredients: Vitamin B12 (as methylcobalamin) (500 mcg). Notable high-dose ingredients include Vitamin B12 at 20,833% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Life Extension Vitamin B12, Methylcobalamin safe to take?

Life Extension Vitamin B12, Methylcobalamin, 500 mcg, 100 Vegetarian Lozenges 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 Life Extension a trustworthy supplement brand?

Life Extension receives a brand trust score of 86/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1980 and headquartered in Fort Lauderdale, Florida, USA, the company offers 352 products in their lineup. They hold 3 verified certifications including Consumerlab, Fda Gmp Inspections, Nsf Gmp. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: Life Extension has 2 historical regulatory incidents on record, which are factored into the trust score.

How much vitamin d3 should i take daily?

The optimal dosage depends on your individual health needs, age, sex, and current nutrient levels. Recommended daily amounts are established by health authorities but may vary from therapeutic doses used in clinical research. It's important to check the Supplement Facts label for the exact amount per serving and compare it against the % Daily Value. Some supplements provide mega-doses well above the Daily Value, which may not be necessary and in some cases could be harmful — particularly for fat-soluble vitamins (A, D, E, K) that accumulate in the body. GoodSupp's efficacy analysis evaluates whether a product's dosages align with clinically studied amounts. Always consult your healthcare provider for personalized dosage recommendations.

What does vitamin d do?

This is an important question for supplement consumers. The dietary supplement industry is largely self-regulated, which means product quality, ingredient transparency, and safety practices vary significantly between brands and products. The most reliable way to evaluate any supplement is to check for third-party testing certifications, review the full ingredient list and dosages, and research the brand's regulatory track record. GoodSupp's database of over 250,000 analyzed products provides independent quality scores, ingredient safety ratings, and brand trust reports to help you make evidence-based decisions.

How much vitamin d3 per day for a woman?

The optimal dosage depends on your individual health needs, age, sex, and current nutrient levels. Recommended daily amounts are established by health authorities but may vary from therapeutic doses used in clinical research. It's important to check the Supplement Facts label for the exact amount per serving and compare it against the % Daily Value. Some supplements provide mega-doses well above the Daily Value, which may not be necessary and in some cases could be harmful — particularly for fat-soluble vitamins (A, D, E, K) that accumulate in the body. GoodSupp's efficacy analysis evaluates whether a product's dosages align with clinically studied amounts. Always consult your healthcare provider for personalized dosage recommendations.

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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.