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Vitamin B12 is crucial for nerve function, red blood cell formation, and DNA synthesis. Ensuring adequate intake is vital for overall health, especially for those with dietary restrictions or absorption issues. Choosing the right supplement can make a significant difference in maintaining energy levels and cognitive function.
Energy metabolism support supplement(1): contains one 150 count bottle of Nature Made Vitamin B12 1000 mcg Softgels for a 150 day supply
These Nature Made B12 1000mcg softgels help break down food into energy that your body can use all day long
Vitamin B 12 helps support brain cell function and mood health (2)
Vitamin B12 is important for proper red blood cell formation and helps reduce fatigue for those low in B12 vitamins
Adults take one B 12 vitamin softgel daily with water and a meal
This gluten free Vitamin B12 supplement has no synthetic dyes and no artificial flavors
United States Pharmacopeia (USP) Verified, #1 Pharmacist Recommended Vitamin and Supplement Brand*
These statements have not been evaluated by the Food and Drug Administration; this product is not intended to diagnose, treat, cure, or prevent any disease
Active B12: Each capsule provides 1 mg vitamin B12 as methylcobalamin, which is more efficiently used by the body compared to other forms of vitamin B12, like cyanocobalamin
Heart & Brain Health: Supports a normal level of homocysteine in the body to benefit healthy cardiac function, blood cell formation, and optimal nerve function*
Sleep Support: Helps maintain normal circadian rhythms to support restful sleep and supports healthy methylation processes in the body*
Third-Party Certified: This product has been third-party tested and certified to verify what's in the package matches what's on the label and to confirm it contains no unsafe levels of contaminants
Trusted: Thorne is trusted by 100+ professional sports teams and the #1 most recommended clinical brand by consumers and health-care practitioners (Based on a 2026 independent survey of US supplement consumers and health-care practitioners)
Energy metabolism support supplement(1): contains one 150 count bottle of Nature Made Sublingual B12 1000 mcg Fast Dissolve Tablets for a 150-day supply
Nature Made B12 1000mcg tablets help break down food into energy that your body can use all day long
B-12 vitamin helps support brain cell function and mood health(2)
Vitamin B12 supplements provide B12, which is important for proper red blood cell formation and helps reduce fatigue for those low in B12 vitamins
Easy to take with a great tasting flavor; simply dissolve one B12 1000 mcg sublingual tablet under tongue before swallowing. Adults take one Vitamin B12 tablet daily with a meal
Made in the USA with quality global ingredients, these B12 vitamins sublingual fast dissolve tablets are sugar free and have no color added
United States Pharmacopeia (USP) Verified, #1 Pharmacist Recommended Vitamin & Supplement Brand*
These statements have not been evaluated by the Food and Drug Administration; this product is not intended to diagnose, treat, cure, or prevent any disease
Energy metabolism support supplement(1): contains one 90 count bottle of Nature Made Vitamin B12 1000 mcg Softgels for a 90 day supply
These Nature Made B12 1000mcg softgels help break down food into energy that your body can use all day long
Vitamin B 12 helps support brain cell function and mood health (2)
Vitamin B12 is important for proper red blood cell formation and helps reduce fatigue for those low in B12 vitamins
Adults take one B 12 vitamin softgel daily with water and a meal
This gluten free Vitamin B12 supplement has no synthetic dyes and no artificial flavors
United States Pharmacopeia (USP) Verified, #1 Pharmacist Recommended Vitamin and Supplement Brand*
These statements have not been evaluated by the Food and Drug Administration; this product is not intended to diagnose, treat, cure, or prevent any disease
These statements have not been evaluated by the Food and Drug Administration; this product is not intended to diagnose, treat, cure, or prevent any disease
Supports energy production by converting food to fuel and is essential for red blood cell formation. Promotes energy metabolism.*
Product Note: Exposure to heat or sunlight may lead to melting/damage of product. Hence customers are expected to be available during the product delivery
Supports normal brain function and cognition. Supports healthy immune function*
Raspberry flavor with other natural flavors; Soft pectin-based vegan gummy
100 gummies, a one-and-a half month supply (taken daily at listed serving size)
Gluten-free, no wheat, no dairy, no soy, no egg
An Amazon brand
During the summer months products may arrive warm but Amazon stores and ships products in accordance with manufacturers' recommendations, when provided.
Last update on 2026-07-14 / Affiliate links / Images from Amazon Product Advertising API
How to Choose the Best Vitamin B12 Supplements
Forms of Vitamin B12
Vitamin B12 supplements come in several forms, each with slightly different absorption rates and uses. The most common forms are cyanocobalamin and methylcobalamin. Cyanocobalamin is a synthetic form that is stable and cost-effective, while methylcobalamin is the active form found naturally in the body and may be preferred by some individuals.
Dosage and Potency
The recommended daily allowance (RDA) for Vitamin B12 varies by age, but adults generally need around 2.4 micrograms (mcg). However, supplements often contain much higher doses, ranging from 500 mcg to over 5,000 mcg. The appropriate dosage depends on your individual needs and the reason for supplementation. It's advisable to consult with a healthcare provider to determine the right potency for you.
Absorption Methods
Vitamin B12 can be taken in various forms, including tablets, capsules, sublingual (under the tongue) tablets, lozenges, sprays, and injections. Sublingual forms and sprays are often favored as they bypass the digestive system and may offer quicker absorption. The best method depends on personal preference and potential absorption challenges.
Frequently Asked Questions
Who should consider taking a Vitamin B12 supplement?
Individuals following vegan or vegetarian diets, older adults, pregnant or breastfeeding women, and those with certain medical conditions like pernicious anemia or digestive disorders are more likely to benefit from B12 supplementation. It's always best to consult a healthcare professional to assess your individual needs.
What are the signs of a Vitamin B12 deficiency?
Symptoms of a deficiency can include fatigue, weakness, constipation, loss of appetite, weight loss, and megaloblastic anemia. Neurological problems like numbness and tingling in the hands and feet, balance issues, and depression can also occur.
How quickly do Vitamin B12 supplements work?
The speed at which you notice benefits can vary depending on the severity of your deficiency and the type of supplement used. Some individuals may feel improvements in energy levels within days or weeks, while others might take longer to experience noticeable changes.
Can I take too much Vitamin B12?
Vitamin B12 is water-soluble, meaning excess amounts are typically excreted by the body. Toxicity is rare, and high doses are generally considered safe for most people. However, it's still wise to stick to recommended dosages or those advised by your doctor.
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