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Life Extension Life Extension Vitamin B12 Methylcobalamin
SPECIMEN #LIFE-EXT
VITAMINLife Extension

Life Extension Vitamin B12 Methylcobalamin

High-potency B12 for energy, brain health, and nerve support.. You're getting 5,000 mcg of methylcobalamin, which is the bioactive form your body actually uses. Most cheap vitamins use cyanocobalamin, but this version skips the conversion step in your liver. It's an ideal choice for vegans or older adults who often struggle with B12 absorption. The database likely missed the unit conversion here, as 5mg is a powerhouse dose that works for about 90% of people with B12 concerns.

9.5/10
EXCEPTIONAL

This is a gold-standard B12 supplement that delivers a massive clinical dose in the best possible form.

1 ingredientLOZENGE60 servings
We'd recommend this
Evidence
9.0
Dosing
1.0
SynergyN/A (single ingredient)
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WhenMorning

B12 is involved in energy metabolism and can be mildly stimulating for some people.

FoodEmpty stomach

B12 absorption is often better when taken away from large meals, though methylcobalamin is fairly flexible.

SafetyAll clear

B12 is very safe even at high doses because it is water-soluble. Your body simply excretes what it doesn't use.

ResearchStrong evidence

Methylcobalamin is one of the most studied and proven forms of B12 for neurological health.

What We Like

  • Bioactive methylcobalamin form
  • High-potency 5mg clinical dose
  • Excellent brand reputation

Watch Out For

  • Single ingredient only
  • Dose might be higher than some need

What We Analyzed

Life Extension Vitamin B12 Methylcobalamin Supplement Facts

Verified Supplement Facts

Every dose checked against clinical research

We analyzed the actual supplement facts panel for this product. Every ingredient dose below was cross-referenced with published clinical trials to determine if it matches what studies actually use.

10 ingredients analyzed1 underdosed

Source: Official product page

Ingredient Breakdown

1 underdosed
Clinical Adequate Underdosed Overdosed|Bar = % of clinical dose
IngredientDoseStatusvs. Clinical
Vitamin B1210.0
5 mgUNDERDOSED
1%
5 mg

of 1000mcg

UNDERDOSED
1%
In our database (click to learn more) Not yet reviewed
Other Ingredients(inactive)

xylitol, sorbitol, maltodextrin, stearic acid, vegetable stearate, microcrystalline cellulose, natural vanilla flavor, rice starch, modified food starch

Our Analysis

Best For

Vegans, vegetarians, seniors, and those with low energy or brain fog.

Skip This If

People with Leber's hereditary optic neuropathy should consult a doctor first.

Time to Feel

1-4 weeks

Value

Mid-range

How to take: Take daily. Water-soluble vitamins like B12 don't typically require cycling.

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