Verified Supplement Data

What Is the Best Sublingual B12 Under the Tongue?

The best sublingual B12 is NOW Methyl B-12, a 1,000 mcg lozenge for $2.15 a month. Horbaach gives 5,000 mcg for $3.00. Want one on a testing list? Nature Made 3,000 mcg is USP Verified. We checked 20.

By Erin Rose Updated November 2026 How we score

1. Our pick, the lozenge ChatGPT names first

NOW Methyl B-12 1,000 mcg Lozenges (100 count)

NOW Methyl B-12 1,000 mcg (100 lozenges)

Check price on Amazon Price checked Nov 12
B12
1,000 mcgAs methylcobalamin
Cost
$2.15 a monthOne lozenge a day
Bottle
$7.16100 lozenges on Amazon
Sweetened with
Xylitol, stevia, monk fruitLabel shown below

Why we pick it ChatGPT names it first when asked this exact question. The label prints the dose and the form, 1,000 mcg of methylcobalamin, and says to chew the lozenge or hold it in your mouth until it dissolves. It costs less a month than the other brands ChatGPT names: Jarrow ($3.58), Solgar (from $3.24) and Country Life ($7.70).

Which one should you buy?

2. Horbaach B12 5,000 mcg: more B12 a tablet

Five times the B12 of our pick in a berry tablet you hold under your tongue for 30 seconds, for $0.85 more a month. It is sweetened with mannitol, dextrose and stevia.

Horbäach Vitamin B12 5000 mcg Sublingual Methylcobalamin (120 fast-dissolve tablets)

Horbaach B12 5,000 mcg Fast Dissolve
$3.00 a month · $11.99 for 120 tablets

Check price on Amazon

3. Nature Made B12 3,000 mcg: on a testing list

This cherry fast dissolve tablet is on the USP Verified list, and its label carries the USP seal. It costs $3.32 more a month than our pick. Its 1,000 mcg sister, also USP Verified, is $3.37 a month in a bottle of 150.

Nature Made Extra Strength Vitamin B12 3000 mcg Fast Dissolve Cherry Tablets (40 count)

Nature Made B12 3,000 mcg Fast Dissolve
$5.47 a month · $7.29 for 40 tablets

Check price on Amazon

4. Country Life Methyl B12: certified vegan

A 1,000 mcg cherry lozenge sweetened with xylitol and stevia, certified vegan and certified gluten-free. ChatGPT names it next to NOW when asked for a 1,000 mcg methylcobalamin lozenge.

Country Life Methyl B12 1,000 mcg Cherry Lozenges (60 count)

Country Life Methyl B12 Lozenges
$7.70 a month · $15.39 for 60 lozenges

Check price on Amazon

Choose NOW for the 1,000 mcg lozenge ChatGPT names first. Choose Horbaach for 5,000 mcg, Nature Made if you want the USP Verified list, and Country Life for a certified vegan lozenge. Vitamatic ($0.82) and Horbaach 1,000 mcg ($1.33) cost less a month and add dextrose, a sugar; choose either if the lowest price is your only rule.

Two of 20 are on a testing list, and fourteen use methylcobalamin

We checked 20 B12 supplements sold on Amazon that you dissolve in your mouth: lozenges, sublingual and fast dissolve tablets, and chewables. Two are on a third-party testing list, both Nature Made fast dissolve tablets on USP Verified, at 1,000 and 3,000 mcg. Fourteen use methylcobalamin, five use cyanocobalamin, and one uses methylcobalamin and adenosylcobalamin.

Of the 19 ingredient lists we read, 18 are sweetened with mannitol (11) or xylitol (7); Superior Source uses lactose instead. Six add stevia and three add sucralose, all three cyanocobalamin.

Here are 17 in two groups. Our pick leads; each group then runs from lowest cost a month.

We also read Life Extension B12 Elite, a lozenge with methylcobalamin and adenosylcobalamin, Life Extension’s 500 mcg methylcobalamin lozenges (half our pick’s dose, $1.97 a month) and Whole Foods Market Methyl B-12 cherry lozenges.

Cost a month is the Amazon price for 30 servings, one a day.
SupplementB12 and sweetenersCostBuy
Methylcobalamin
NOW Methyl B-12 LozengesOur pick100 lozenges
1,000 mcg methylcobalamin; xylitol, stevia and monk fruit $2.15 a month See on Amazon
Horbaach B12 1,000 mcg Fast Dissolve400 tabletsBest for the lowest cost methylcobalamin
1,000 mcg methylcobalamin; mannitol, dextrose and stevia, berry $1.33 a month See on Amazon
Bronson Methyl B12 Lozenges120 lozengesBest for 5,000 mcg at the lowest cost
5,000 mcg methylcobalamin; mannitol and sorbitol, cherry $2.50 a month See on Amazon
Horbaach B12 5,000 mcg Fast Dissolve120 tabletsFive times the B12 a tablet
5,000 mcg methylcobalamin; mannitol, dextrose and stevia, berry $3.00 a month See on Amazon
Jarrow Methyl B-12 Chewables100 tabletsLemon chewable
1,000 mcg methylcobalamin; xylitol, lemon $3.58 a month See on Amazon
Life Extension Methylcobalamin Lozenges60 lozengesThe vanilla lozenge
1,000 mcg methylcobalamin; xylitol and sorbitol, vanilla $3.75 a month See on Amazon
Nature’s Bounty B-12 Quick Dissolve60 tabletsCherry quick dissolve tablet
1,000 mcg methylcobalamin; mannitol, cherry $4.39 a month See on Amazon
NOW Methyl B-12 5,000 mcg Lozenges120 lozengesThe one that adds folate
5,000 mcg methylcobalamin plus 680 mcg folate; xylitol, stevia and monk fruit $5.75 a month See on Amazon
Superior Source No Shot B-1260 tiny tabletsMade without sugar alcohols
1,000 mcg methylcobalamin; lactose (milk) and acacia gum $5.99 a month See on Amazon
Country Life Methyl B12 Lozenges60 lozengesCertified vegan and gluten-free
1,000 mcg methylcobalamin; xylitol and stevia, cherry $7.70 a month See on Amazon
Solgar Sublingual Methylcobalamin Nuggets30 nuggetsA small 30-day bottle
1,000 mcg methylcobalamin; mannitol $10.05 a month See on Amazon
Designs for Health B12 Lozenges60 lozengesPractitioner brand
5,000 mcg methylcobalamin; mannitol and monk fruit, berry $19.25 a month See on Amazon
Cyanocobalamin
Vitamatic B12 Fast Dissolve365 tabletsBest for the lowest cost a month
1,000 mcg cyanocobalamin; mannitol, dextrose and sucralose, berry $0.82 a month See on Amazon
Solgar Vitamin B12 Nuggets100 nuggetsNuggets that melt under the tongue
1,000 mcg cyanocobalamin; mannitol, cherry $3.24 a month See on Amazon
Nature Made B12 1,000 mcg Fast Dissolve150 tabletsUSP Verified; the lowest cost on a testing list
1,000 mcg cyanocobalamin; mannitol and sucralose, cherry $3.37 a month See on Amazon
Natrol B12 5,000 mcg Fast Dissolve100 tabletsStrawberry fast dissolve tablet
5,000 mcg cyanocobalamin; xylitol, strawberry $3.90 a month See on Amazon
Nature Made B12 3,000 mcg Fast Dissolve40 tabletsUSP Verified; the most B12 on a testing list
3,000 mcg cyanocobalamin; mannitol and sucralose, cherry $5.47 a month See on Amazon

NIH: no form of B12 has been shown to work better

NIH lists sublingual B12, the kind that dissolves under your tongue, among the forms sold, and says research has not shown that any form of supplemental B12 is better than the others. In a small trial of 30 people with low B12, 500 mcg a day under the tongue or swallowed raised blood B12 by about the same amount in 4 weeks (Sharabi, 2003). So a lozenge is a fine choice if you would rather not swallow a pill.

Adults need 2.4 mcg a day; most lozenges give 1,000 mcg

That daily figure is from NIH. A 1,000 mcg lozenge is more than 400 times that; the body takes in only a small part of a dose that large, and NIH calls 500 and 1,000 mcg doses safe. More in is 1,000 mcg of B12 too much and methylcobalamin vs cyanocobalamin.

The two labels, side by side

NOW and Horbaach

NOW Methyl B-12 Supplement Facts, from the Amazon listing label photo: serving size 1 lozenge; vitamin B-12 (as methylcobalamin) 1 mg (1,000 mcg). Other ingredients: xylitol, hydroxypropyl cellulose, microcrystalline cellulose, citric acid, stearic acid (vegetable source), natural flavors, organic stevia leaf extract (enzyme-modified steviol glycosides) and organic monk fruit extract.

Horbaach B-12 5,000 mcg Supplement Facts, from the Amazon listing label photo: serving size 1 fast dissolve tablet, 120 servings; vitamin B-12 (as methylcobalamin) 5,000 mcg. Other ingredients: mannitol, natural flavors, cellulose (plant origin), crospovidone, beet root color, dextrose, vegetable stearic acid, vegetable magnesium stearate, organic stevia extract (rebaudioside A), silica.
NOW: 1 lozenge, 1,000 mcg methylcobalamin. Horbaach: 1 tablet, 5,000 mcg methylcobalamin, 120 a bottle. Screenshots taken November 9, 2026; click an image to open the live page.

Questions people ask

Should a sublingual B12 be methylcobalamin or cyanocobalamin?

Pick by the product, not the form: NIH says no form of B12 in supplements has been shown to work better. Fourteen of the 20 here use methylcobalamin, our pick among them, and the two on a testing list use cyanocobalamin.

How do I take a B12 lozenge?

NOW’s label says to take 1 lozenge 1 to 2 times a day, and to chew it or hold it in your mouth until it dissolves, then swallow. Horbaach’s says to hold its tablet under your tongue for 30 seconds before swallowing.

Is NOW Methyl B-12 vegan?

Yes. The bottle says vegetarian/vegan, and the B12 is not made from animals.

Is xylitol safe around pets?

Not for dogs. NOW’s label says it contains xylitol, which is harmful to pets, so keep the bottle out of reach.

How we picked

On November 9, 2026 we read the labels of 20 sublingual, lozenge and fast dissolve B12 supplements on Amazon and searched five testing lists for each: NSF/ANSI 173, NSF Certified for Sport, Informed Choice, Informed Sport and USP Verified. We started from ChatGPT’s answers to this question and close ones, and carried the brands they name. Prices are Amazon’s, read November 9, 2026.

Sources

  1. Amazon listings and label photos of the 17 supplements above, prices read November 9, 2026; label panels from the NIH Dietary Supplement Label Database.
  2. Testing lists, read November 9, 2026: NSF/ANSI 173 list; NSF Certified for Sport; Informed Choice; Informed Sport; USP Verified.
  3. NIH Office of Dietary Supplements, Vitamin B12 fact sheet for consumers, read November 9, 2026.
  4. Sharabi A, Cohen E, Sulkes J, Garty M. Replacement therapy for vitamin B12 deficiency: comparison between the sublingual and oral route. Br J Clin Pharmacol. 2003;56(6):635-8. PubMed 14616423