NOW Foods
NOW Foods Supplements, Vitamin B-12 5,000 mcg, With Folic Acid, Nervous System Health*, 60 Lozenges
- Quantity
- 60 count
- Potency
- 5,000 mcg
$9.70$0.16/count
View product Supplement guide Vitamins
Vitamin B12
Vitamin B12 is an essential nutrient that plays a crucial role in energy production, nerve function, and the formation of red blood cells. It supports metabolic processes and is often used to address deficiencies, particularly in individuals with dietary restrictions or absorption challenges.
At a glance
Snapshot
- Primary goal
- Energy boost
- Dosage range
- 500-2000 mcg daily
- Best time to take
- Morning
- Time to effect
- 1-2 weeks
- Common stacks
- Folate, Iron, Vitamin D
- Intake notes
- Sublingual form may enhance absorption
Ranked picks
Top 3 Best Vitamin B12 Supplements
Nature's Bounty
Nature's Bounty Vitamin B12 1000 mcg Supplements, Supports Energy Metabolism, 200 Ct
- Quantity
- 200 count
- Potency
- 1000 mcg
$9.48$0.05/count
View product
Natrol
Natrol Vitamin B12 Fast Dissolve Tablets, Promotes Energy, Supports a Healthy Nervous System, Maximum Strength, Strawberry Flavor, 5,000mcg, 100 Count
- Quantity
- 100 count
- Potency
- 5,000mcg
$8.96$0.09/count
View productTop 10 Vitamin B12 Supplements
NOW Foods
NOW Foods Supplements, Vitamin B-12 5,000 mcg, With Folic Acid, Nervous System Health*, 60 Lozenges
- Quantity
- 60 count
- Potency
- 5,000 mcg
- NootroScore
- 9.0
- Price
- $9.70$0.16/count
Nature's Bounty
Nature's Bounty Vitamin B12 1000 mcg Supplements, Supports Energy Metabolism, 200 Ct
- Quantity
- 200 count
- Potency
- 1000 mcg
- NootroScore
- 9.0
- Price
- $9.48$0.05/count
Natrol
Natrol Vitamin B12 Fast Dissolve Tablets, Promotes Energy, Supports a Healthy Nervous System, Maximum Strength, Strawberry Flavor, 5,000mcg, 100 Count
- Quantity
- 100 count
- Potency
- 5,000mcg
- NootroScore
- 9.0
- Price
- $8.96$0.09/count
Nature's Bounty
Nature's Bounty Vitamin B12 2500 mcg, Cellular Energy Support, for Energy Metabolism, Heart & Nervous System Health, 75 Quick Dissolve Tablets
- Quantity
- 75 count
- Potency
- 2500 mcg
- NootroScore
- 9.0
- Price
- $8.87$0.12/count
Nature Made
Nature Made Vitamin B12 1000 mcg, Dietary Supplement for Energy Metabolism Support, 150 Softgels, 150 Day Supply
- Quantity
- 150 count
- Potency
- 1000 mcg
- NootroScore
- 8.9
- Price
- $9.98$0.07/count
vitafusion
vitafusion Extra Strength Vitamin B12 Gummy Vitamins for Energy Metabolism Support and Nervous System Health Support, Cherry Flavored, America’s Number 1 Gummy Vitamin Brand, 45 Day Supply, 90 Count
- Quantity
- 90 count
- Potency
- N/A
- NootroScore
- 8.9
- Price
- $9.74$0.11/count
Nature's Bounty
Nature's Bounty Vitamin B12 5000 Mcg Sublingual Liquid, Cardiovascular Health & Cellular Energy Support, 2 Fl Oz (1 Count)
- Quantity
- 2 fl oz
- Potency
- 5000 mcg
- NootroScore
- 8.9
- Price
- $9.99$5/Fl Oz
Nature Made
Nature Made Vitamin B12 1000 mcg, Dietary Supplement For Energy Metabolism Support, 160 Time Release Tablets, 160 Day Supply
- Quantity
- 160 count
- Potency
- 1000 mcg
- NootroScore
- 8.7
- Price
- $10.65$0.07/count
Nature Made
Nature Made Extra Strength Vitamin B12 3000 mcg, Dietary Supplement for Energy Metabolism Support, 60 Softgels, 60 Day Supply
- Quantity
- 60 count
- Potency
- 3000 mcg
- NootroScore
- 8.5
- Price
- $11.99$0.20/count
Dr. Berg
Dr. Berg Natural Vitamin B12 1000 mcg with B Complex Blend - Methylcobalamin B12 for Energy, Nerve Health, and Cognitive Function* - Methylated B12 with Folate - 60 Capsules (2-Month Supply)
- Quantity
- 60 count
- Potency
- 1000 mcg
- NootroScore
- 7.1
- Price
- $19.99$0.33/count
Affiliate disclosure: NootroWorld may earn a commission from qualifying purchases made through these links, at no extra cost to you. Rankings are calculated independently of any affiliate relationship. How we make money.
Frequently Asked Questions
Common questions about Vitamin B12 answered by our experts
- What are the symptoms of Vitamin B12 deficiency?
- Vitamin B12 deficiency can cause fatigue, weakness, numbness or tingling in hands and feet, difficulty walking, memory problems, and mood changes like depression. Severe deficiency may lead to megaloblastic anemia or neurological damage. Those at risk include vegans, older adults, and people with digestive disorders like pernicious anemia.
- How much Vitamin B12 should I take daily?
- The recommended daily intake is 2.4 mcg for adults, 2.6 mcg for pregnant women, and 2.8 mcg for breastfeeding women. Higher doses (500–1000 mcg) may be needed for those with absorption issues, as only a small percentage is absorbed orally. Always consult a healthcare provider for personalized dosing.
- Can Vitamin B12 help with energy levels?
- Vitamin B12 supports energy production by aiding in red blood cell formation and metabolism. While it can boost energy in deficient individuals, there's no evidence it enhances energy in people with adequate levels. Fatigue from other causes won't improve with B12 supplementation.
- Are there any side effects from taking too much Vitamin B12?
- Vitamin B12 is generally safe even at high doses, as excess is excreted in urine. Rare side effects may include mild diarrhea, itching, or rash. However, high doses can mask folate deficiency or interact with certain medications like potassium supplements or some antibiotics.
- What's the best form of Vitamin B12: cyanocobalamin or methylcobalamin?
- Cyanocobalamin is a synthetic, stable form often used in supplements, while methylcobalamin is a natural, active form that may be better absorbed. Methylcobalamin is preferred for neurological support, but both are effective for addressing deficiencies. Choice may depend on individual needs and budget.
- Can Vitamin B12 help with nerve damage or neuropathy?
- Vitamin B12 is crucial for nerve health and can help repair nerve damage caused by deficiency, improving symptoms like tingling or numbness. However, it won't reverse neuropathy from other causes (e.g., diabetes). Proper diagnosis is essential, as treatment depends on the underlying condition.