Adeno B12 - 60 Lozenges

Rated 4.9 out of 5
54 Reviews

List price: $

$17.95 You save: $$$ (%)

Key Benefits and Actions*

  • May help support the normal conversion of homocysteine to methionine
  • May help support healthy metabolism
  • May help support cognitive health
  • May help support healthy energy levels

Adeno B12 Lozenges by Seeking Health provide 3,000 mcg of adenosylcobalamin, the mitochondrial form of vitamin B12, in an easy-to-deliver lozenge. Adenosylcobalamin is considered an active “coenzyme” form of B12, meaning it is used directly in B12-dependent enzyme reactions in the body. This form provides an alternative to methylcobalamin for individuals who may be sensitive to methyl donors or methylated B vitamins.*

Vitamin B12 is required for proper red blood cell formation, neurological function, and DNA synthesis. Vitamin B12 functions as a cofactor for methionine synthase and L-methylmalonyl-CoA mutase. Methionine synthase catalyzes the conversion of homocysteine to methionine. Methionine is required for the formation of SAMe (S-adenosylmethionine), an important methyl donor.*

Vitamin B12 is naturally present in seafood, shellfish, liver, eggs and dairy products. It may be harder for vegetarians and vegans to meet their daily needs for vitamin B12 from food sources without relying on supplements or fortified foods.*

If you are looking for a similar product with methylfolate, consider our Active B12 with L-5-MTHF. For a similar product combined with methylcobalamin, another coenzyme form of B12, consider our Active B12 5000. For vitamin B12 in the form of hydroxocobalamin, consider our Hydroxo B12.


Suitable for Vegans and Vegetarians

Free of:

Milk, Egg, Fish, Shellfish, Tree Nuts, Peanuts, Wheat, Soy, Gluten, GMO, Artificial Colors, Artificial Flavors

Suggested Use

Take 1 lozenge daily with food or as directed by your healthcare professional. Lozenge may be broken into smaller pieces if lower potency is desired. Do not take within 5 hours of bedtime as it may interfere with sleep.


Children and pregnant or lactating women should consult their healthcare practitioner prior to use. Do not use if tamper seal is damaged. Consult with a healthcare professional before use if you are using antibiotics or other medications.

Serving Size: 1 Lozenge
Servings Per Container: 60

Vitamin B12 (as adenosylcobalamin) 3000 mcg 125,000%
DV = Daily Value

Other Ingredients: Xylitol, ascorbyl palmitate, silica, natural cherry flavor.

Learning Center Find product FAQ and more! Click here.
Cost Per Serving $0.30
Delivery Method Lozenge
Tablet Size 11/32"
Storage Keep closed in a cool, dry place out of reach by children.
Age Suitability Adult
Manufactured In USA
Case Quantity 24
Dimensions (in.) Length: 1.875 / Width: 1.875 / Height: 3.25
Weight (lb.) 0.0500
Barcode 700580723589
Return Policy Learn more about our Return Policy.
average rating 4.9 out of 5
Based on 54 reviews
  • 5 Stars
    46 Reviews
  • 4 Stars
    8 Reviews
  • 3 Stars
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100% of reviewers would recommend this product to a friend
54 Reviews
Rated 4 out of 5
Review posted

It lowered my MCV values

Putting this under my tongue every three days for a few weeks lowered my MCV blood values. I read that increased values indicates b12 deficiency.

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Rated 5 out of 5
Review posted

Pure adenosylcobalamin - As

Pure adenosylcobalamin - As of April 2019, there are still only two pure adenosylcobalamin supplements on the market. And I can still say this one works great!

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Rated 4 out of 5
Review posted

Effective - I have

Effective - I have some SNPs that affect my ability to uptake/transport B12 levels. This must be working because I feel a boost in my endurance when I take it.

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Rated 5 out of 5
Review posted

Excellent - The best

Excellent - The best b12 supplement out there!

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Rated 5 out of 5
Review posted

Better B-12 for me

Better B-12 for me - Turns out I cannot handle Methyl B -12. I was getting severe migraines from it. I was disappointed as I’m deficient, but came across this product . Two days in, no migraines and I have more energy.

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