Vitamin B12 Adenosylcobalamin Liquid
Boost cellular energy quickly with sublingual adenosylcobalamin B12
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Nutri Tailor 4.6/5 "Excellent" on Trustpilot
100ml
1754 day supply
per day
Guaranteed additive free
Highest purity
Therapeutically effective
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Have questions about Vitamin B12 Adenosylcobalamin Liquid?
"When would I choose adenosylcobalamin over methylcobalamin?"
"I have chronic fatigue. Could my mitochondria need this form specifically?"
"Can I combine this with the methylcobalamin liquid for full B12 coverage?"
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Boost cellular energy quickly with sublingual adenosylcobalamin B12
Adenosylcobalamin only, no other B12 forms. This liquid contains adenosylcobalamin as its sole form of vitamin B12, with no methylcobalamin, cyanocobalamin or hydroxocobalamin, and no other ingredients beyond purified water. If you want methylcobalamin alongside it, see Vitamin B12 Methylcobalamin Liquid, or TRI-B12 Liquid for all three forms in one bottle.
- 76 mcg adenosylcobalamin per drop (3040% NRV), 1 drop = 1 serving
- 1754 servings per 100ml bottle
- Available in 100ml, 250ml and 500ml bottles
- Vegan, gluten free, dairy free, nut free
- Made in the UK by Metabolics
- Sublingual option: hold under the tongue for 30 seconds
A liquid vitamin B12 providing 76mcg of adenosylcobalamin per single drop in a purified water base. Adenosylcobalamin is the mitochondrial form of B12, serving as a cofactor for the enzyme methylmalonyl CoA mutase within the mitochondria. This enzyme is essential for energy production from odd chain fatty acids and branched chain amino acids. When adenosylcobalamin is insufficient, methylmalonic acid accumulates, which can be measured in blood or urine as a specific marker of functional B12 deficiency.
The liquid format offers two advantages over capsules: flexible dosing (the dose can be adjusted drop by drop) and the option for sublingual absorption (drops placed under the tongue are absorbed directly into the bloodstream, bypassing the digestive system). This is particularly valuable for those with B12 absorption issues due to low stomach acid, intrinsic factor deficiency, pernicious anaemia or digestive conditions. The bottle provides 1754 servings per 100ml, making it exceptionally economical for long term use.
Key benefits:
- Quick energy via sublingual absorption
- Cellular fuel for mitochondria
- Active B12 no conversion needed
| 1 drop contains: | %NRV* | |
|---|---|---|
| Vitamin B12 | 76 mcg | 3040% |
† Nutrient Reference Value (NRV*) not established
Purified Water, Adenosylcobalamin.
1 serving = 1 drop | 1754 servings per 100ml
Directions for use:
Take 1 drop per day in water with food.
The drop can be added to a small glass of water, taken directly on the tongue or held under the tongue for 30 seconds for sublingual absorption. For those specifically targeting mitochondrial energy, 2 to 3 drops daily may be used.
For comprehensive B12 support covering both mitochondrial and methylation functions, pair with Vitamin B12 Methylcobalamin Liquid, or use TRI B12 Liquid which provides all three forms in a single product.
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Suitable for men.
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Suitable for women.
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Suitable for people under sixteen years of age.
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If pregnant or breastfeeding consult your healthcare professional before purchasing and consuming this product.
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Suitable for vegetarians.
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Suitable for vegans.
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No gluten containing ingredients.
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No nut containing ingredients.
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No dairy containing ingredients.
If you are taking medication consult your prescribing physician before purchasing and consuming supplements.
Store in a refrigerator once opened.
Keep out of reach of children.
Information displayed does not constitute medical advice.
This product should not be used as a substitute for a varied diet.
Once opened, consume within 3 months.
Quality promise
Why clinical grade matters
- ✓ GMP certified, pharmaceutical grade manufacturing
- ✓ Made in UK cleanroom facilities, ISO 9001 & ISO 14001 accredited
- ✓ No fillers, binders or additives — only active ingredients
- ✓ Fully traceable from raw material to finished product
- ✓ Non-GM, non-irradiated, 100% green energy manufacturing
Evidence
What the research shows
Our Health Reference Library is an ever-growing collection of peer-reviewed research and health guidance.
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Registered Associate Nutritionist (ANutr), MSc Nutritional Medicine
Frequently asked questions
What is adenosylcobalamin and how is it different from methylcobalamin?
Adenosylcobalamin is the mitochondrial form of vitamin B12, acting as a cofactor for the enzyme methylmalonyl CoA mutase. Methylcobalamin is the cytoplasmic form involved in methylation. Both are active forms that require no conversion by the body. This product contains adenosylcobalamin only.
How much B12 is in each drop?
Each drop provides 76mcg of vitamin B12 as adenosylcobalamin. The suggested serving is 1 drop per day, and the dose can be adjusted drop by drop.
What sizes does it come in?
Three bottle sizes: 100ml, 250ml and 500ml. At one drop per day, the 100ml bottle provides 1754 servings.
What are the ingredients?
Two: purified water and adenosylcobalamin. No fillers, binders, flavourings or preservatives. Suitable for vegans and vegetarians, with no gluten, dairy or nut containing ingredients.
Where is it made?
In the UK by Metabolics, in GMP certified, ISO 9001 and ISO 14001 accredited cleanroom facilities.
How do I take it? Can it be used sublingually?
Take 1 drop per day in water with food, or hold the drop under the tongue for 30 seconds for sublingual absorption. Store in a refrigerator once opened and consume within 3 months.
