Adenosylcobalamin B12 Capsules
The mitochondrial form of B12.
90 capsules
90 day supply
per day £0.25 per capsule
Guaranteed additive free
Highest purity
Practitioner grade
Free UK delivery on 2 or more items
14 day returns
★★★★★ "I won't go back to high street supplements. The difference in quality is something you can actually feel." Susie
Adenosylcobalamin is one of the two active forms of vitamin B12, the one used inside the mitochondria where energy is made. It needs no conversion after it is absorbed.
Vitamin B12 is needed for making red blood cells, for the nervous system and for releasing energy from food, and it contributes to the reduction of tiredness and fatigue. It is found almost only in animal foods, so those on a vegan diet and anyone whose levels have tested low often need a supplement.
Each capsule provides a high dose of adenosylcobalamin with no fillers or binders, in a vegetable capsule suitable for vegans. It is often chosen by people who prefer a capsule to drops.
| Each capsule contains: | %NRV* | |
|---|---|---|
| Vitamin B12 | 1000 mcg | 40000% |
* Nutrient Reference Value
Suitable for men.
Suitable for women.
Consult your healthcare practitioner before use if pregnant or breastfeeding.
Suitable for vegetarians.
Suitable for vegans.
No gluten containing ingredients.
No nut containing ingredients.
No dairy containing ingredients.
If you are taking prescribed medicines or under medical supervision, consult your healthcare practitioner before use.
Store in a cool dry place.
Keep out of reach of children.
This information is not a substitute for advice from a healthcare practitioner.
This product should not be used as a substitute for a varied diet.
Once opened, consume within 3 months.
UK delivery is free when you order 2 or more items. A single item goes by Royal Mail Tracked 48 for £3.95. With 3 or more items, Tracked 24 is free. With 4 or more items, Special Delivery is free. Special Delivery arrives the next working day if you order before 2pm.
Delivery and worldwide shipping options are shown at checkout, with duties and taxes included.
Unopened items in their original packaging can be returned within 14 days of delivery.
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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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. These capsules contain adenosylcobalamin only.
How much B12 is in each capsule?
Each capsule provides 1000mcg of vitamin B12 as adenosylcobalamin (40000% NRV) in a vegetarian capsule shell. The pack contains 90 capsules, a 90-day supply at one per day.
Should I choose the capsules or the liquid?
The capsules provide a higher fixed dose of 1000mcg in one step. The liquid provides 76mcg per drop for flexible, gradual dosing and a sublingual option. Many people start with the liquid and move to capsules for convenience once their dose is settled.
Are these adenosylcobalamin tablets or capsules?
Capsules. Each vegetarian capsule provides 1000mcg of vitamin B12 as adenosylcobalamin and nothing else. If you would rather dose drop by drop, see the Vitamin B12 Adenosylcobalamin Liquid.
Who are adenosylcobalamin capsules best for?
People who want the mitochondrial form of B12 at a fixed 1000 mcg dose, often alongside methylcobalamin, people whose methylmalonic acid came back raised and want the matching form with their GP's agreement, and vegetarians and vegans. If you would rather build up gradually, the Vitamin B12 Adenosylcobalamin Liquid gives 76 mcg per drop.
How long does adenosylcobalamin take to work?
Blood levels rise within days of starting. Tiredness usually eases over two to six weeks. Nerve-related symptoms take months and need a GP. If you started because of a low result, retest after eight to twelve weeks.
Why capsules rather than tablets?
Tablets need binders, fillers and a coating to hold their shape. A capsule is a cellulose shell around the powder, so it carries no binders and breaks down quickly once swallowed.
