Boosts energy and brain function, especially for vegetarians and the elderly.
Effective Dose
500-1000 mcg daily
Onset
2-4 weeks
Cost
Budget
Cycle
No cycling is necessary; B12 can be taken continuously.
7 things you need to know
What it does
Boosts energy and brain function, especially for vegetarians and the elderly.
Worth it?
8.5/10. Vitamin B12 is essential for nerve function, DNA synthesis, and red blood cell formation. Deficiency is common, especially in vegetarians/vegans and older adults. Supplementation is highly effective for correcting deficiencies and improving energy levels and cognitive function in deficient individuals.
How much to take
500-1000 mcg daily
Price
Cheap (under $15/month)
How fast it works
Takes 2 to 4 weeks to notice
Safety
Check if: individuals with leber's disease should avoid cyanocobalamin., high doses may interact with certain medications (e.g., metformin, proton pump inhibitors).
What people say
Increased energy levels, improved mental clarity, and a general sense of well-being, especially if deficient. May also improve sleep quality in some individuals.
Vitamin B12 is unique because it's primarily synthesized by bacteria and archaea. It's found naturally in animal products because animals consume these microorganisms.
"Increased energy levels, improved mental clarity, and a general sense of well-being, especially if deficient. May also improve sleep quality in some individuals."
Research backing for this ingredient
Multiple high-quality studies confirm efficacy
250+
Yes
Strong agreement among researchers
Corrects Vitamin B12 deficiency (Oral vs. Intramuscular)
Cochrane Meta-analysis of 3 RCTs
Reduces serum homocysteine levels
Meta-analysis of 12 RCTs (n=1,114)
Improves cognitive function in elderly with low B12 status
Systematic Review of 14 studies
"Vitamin B12's role in human health is well-established, and deficiency is a significant concern, particularly in specific populations. Supplementation is a proven method for addressing deficiencies."
Vitamin B12 is crucial for many bodily functions. Many people, especially those on plant-based diets or older adults, don't get enough from their diet and can benefit from supplementation.
Products below minimum dose are likely ineffective
When
Any time
How
500-1000 mcg daily
Food
Can be taken with or without food. Sublingual forms may have slightly faster absorption.
Noticeable improvements in energy and cognitive function may take several weeks to manifest, especially in cases of severe deficiency.
No cycling is necessary; B12 can be taken continuously.
Check for specific interactions.
Vitamin B12 (Cobalamin) is categorized as a vitamin.
Scientific consensus score: 9/10.
Evidence quality: STRONG.
Add Vitamin B12 (Cobalamin) to your stack analyzer or compare it with other ingredients.
Not medical advice. Always consult a healthcare provider.