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OneVit Vitamin B12 is the spark your body needs to ramp up the healthy and timely production of red and white blood cells for energy and immunity.
Each tablet contains 1,000µg of methylcobalamin, a naturally occurring form of vitamin B12 that comes pre-activated, meaning your body can utilise it immediately to restore your vitamin B12 reserves.
Methylcobalamin also aids the production of myelin – the protective layer around your nerves that minimises wear and tear, increasing the efficiency with which signals are transmitted between the brain and the rest of your body.
OneVit Vitamin B12 is packed with 1,000µg of methylcobalamin - an activated and ready-to-use form of vitamin B12 that the body can put to work immediately to help bolster your immune strength, energy levels, and more.
With 400% of the Nutrient Reference Value of vitamin B12 in each serving, OneVit Vitamin B12 is the ultimate daily supplement to keep your vitamin B12 reserves topped up.
Each serving of OneVit Vitamin B12 contains:
- 1,000µg of Vitamin B12 (Methylcobalamin)
Take one serving of OneVit Vitamin B12 per day, ensuring consistent daily use to maximise its benefits.
How do our subscriptions work?
“As a pharmacist with over 13 years in healthcare…
I’m selective about what I recommend. OneVit is UK-made, scientifically vetted, and built without compromise. For my patients, and for anyone serious about their health, it’s the one I trust.”
Ana Carolina Goncalves
GPhC Number: 2088658
“As a pharmacist with over 13 years in healthcare…
I’m selective about what I recommend. OneVit is UK-made, scientifically vetted, and built without compromise. For my patients, and for anyone serious about their health, it’s the one I trust.”
Ana Carolina Goncalves
GPhC Number: 2088658
Backed By
Real Routines
Real people. Real routines. Real results. See why OneVit is becoming part of everyday wellness.
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Backed By
Real Routines
Real people. Real routines. Real results. See why OneVit is becoming part of everyday wellness.
Shop The Range
About
Why OneVit
Vitamin B12?
A lack of vitamin B12 can disrupt red blood cell health, leaving you feeling down and out for the count far sooner than you’d like. OneVit Vitamin B12 aids the production of healthy red blood cells1 to counter this effect, supercharging your blood’s ability to transport oxygen throughout your body.
OneVit Vitamin B12 boosts the body’s production of several types of immune cells2,3 which help your body fight its daily battles against pathogens. This includes CD8+ and NK cells, which target and destroy infected cells with precision.
OneVit Vitamin B12 contributes to the production of myelin - a protective covering that shields your nerve fibres from damage4 to ensure the electrical signals carrying messages between your brain and body are relayed at lightning speed.
OneVit Vitamin B12 helps stabilise and protect DNA from damage5, keeping the blueprint of your cells intact to ensure your body’s genetic instructions for health stay accurate and functional.
Ingredients
Premium Ingredients In OneVit Vitamin B12
Our Premium Ingredients
We hand-pick every ingredient based on purity, potency and scientific merit with the help of
our experts, settling for nothing less than the best.
- Supports blood oxygenation and energy1
- Helps strengthen immune responses2,3
- Contributes to nerve health4
Vitamin B12
- Supports blood oxygenation and energy1
- Helps strengthen immune responses2,3
- Contributes to nerve health4
Overall Rating
4.9 / 5
Based on 11 independent customer reviews taken by Feefo and Trustpilot.
"Excellent"
Very good experience 👌 fast delivery
Very good products and fast delivery
Submitted: 2 weeks ago
By: OneVit Customer
Review from:
Verified Buyer On Pharmica
It is a quality product. I feel that since taking them, I have improved...maybe?. But as to the product, it is priced very reasonably.
Submitted: 2 months ago
By: Mark Dowden
Review from:
Verified Buyer On Pharmica
"Delivery"
The product looks well packaged and doesn’t have any unpleasant smells.
Delivery was fast and the product was well protected.
Submitted: 6 months ago
By: OneVit Customer
Review from:
Verified Buyer On Pharmica
Excellent way of getting enough Vit B12 easy to order, fast delivery
Easy to use website, straightforward ordering, rapid delivery!
Submitted: 8 months ago
By: OneVit Customer
Review from:
Verified Buyer On Pharmica
"Excellent online pharmacy"
Excellent product. I recommend that everyone try.
Excellent service and friendly customer service. Lots of help in choosing the right medication. Thank you
Submitted: 8 months ago
By: OneVit Customer
Review from:
Verified Buyer On Pharmica
Arrived on time and was what it says on the container 😂
Product arrives on time as ordered
Submitted: 9 months ago
By: Jane
Review from:
Verified Buyer On Pharmica
Arrived on time use this site a lot and have no issues whatsoever with the service
Use pharmica often never had any issues with products,service and delivery highly recommend
Submitted: 9 months ago
By: Jane
Review from:
Verified Buyer On Pharmica
great support for immune system
simple ordering process and rapid delivery
Submitted: 10 months ago
By: Stuart
Review from:
Verified Buyer On Pharmica
Well have not finished them. But not really seen a difference yet. Maybe need to finish them or takes time to kick in
Great product. And works. But better on empty stomach if u can do lol. Can get some effects next morning.too lol.
Submitted: 10 months ago
By: Ray
Review from:
Verified Buyer On Pharmica
Good quality product
Submitted: 12 months ago
By: Sam
Review from:
Verified Buyer On Pharmica
Faq
Vitamin B12 FAQs
OneVit Vitamin B12 contains 1,000µg of methylcobalamin - a naturally occurring form of vitamin B12 that comes pre-activated and ready for use by your body for energy, immune functions, heart health and more.
OneVit Vitamin B12®
18g (120 servings per bottle)
| Primary Ingredients | Per serving (10g) | NRV* |
|---|---|---|
| Vitamin B12 (Methylcobalamin) | 1,000µg | 40,000% |
* Nutrient Reference Value
Methylcobalamin is the active, ready-to-go form of vitamin B12. In contrast, cyanocobalamin is synthetic and requires conversion into methylcobalamin within the body before it becomes effective.
While some brands may opt for budget-friendly cyanocobalamin, we refuse to settle when it comes to selecting our ingredients, which is why we’ve included methylcobalamin in our OneVit Vitamin B12 formula.
Vitamin B12 helps keep the body’s production line of red blood cells in perfect working order.
When vitamin B12 reserves are depleted, it can prompt the production of unhealthy and deformed red blood cells that can’t transport oxygen efficiently. This can deal a serious blow to your energy levels and leave you feeling worn out.
Vitamin B12 also ramps up the body’s production of white blood cells - specifically CD8+ and NK immune cells, which hunt down and eliminate diseased cells to help fortify your body in the battle against pathogens.
On top of that, vitamin B12 helps shield your nerve fibres from damage and contributes to DNA stability. This helps maintain the rapid flow of messages between your brain and body while also ensuring your genetic blueprint remains intact.
If you’re running low on vitamin B12, you’re likely to feel unusually tired and short of breath. Your skin is likely to look paler than usual and your muscles might feel weak due to a potential dip in blood oxygen levels, which can be caused by a low red blood cell count.
You might also find that you can’t think as clearly as you usually do, causing you to feel irritable. In some cases, a vitamin B12 deficiency can also cause digestive symptoms such as nausea and a decreased appetite.
OneVit Vitamin B12 benefits the body and mind in a number of ways. Having cross-checked the claims against solid scientific evidence and the advice of our experts, we found that OneVit Vitamin B12:
- Contributes to energy levels by preventing conditions such as anaemia that affect the optimal transportation of oxygen in the body
- Supports immune responses by helping to boost the body’s levels of several types of white blood cells
- Helps protect nerve functions by shielding the protective covering around nerve fibres
You should start taking OneVit Vitamin B12 immediately, especially if you’re feeling fatigued or experiencing symptoms related to a B12 deficiency.
Yes - we recommend taking one serving per day, every day. Consistent use is essential to help prevent a deficiency, ensuring optimal energy levels, stronger immune responses and proper nerve functioning.
Vitamin B12 is water-soluble, making it easier to absorb on an empty stomach. For most people, this would mean taking OneVit Vitamin B12 in the morning (in a fasted state) - but depending on your schedule, you could take it at night too.
Some people will notice the desired results from taking OneVit Vitamin B12 from day one, while others might have to wait a few weeks. There isn’t an exact time frame because everyone’s built differently - but what we can say is that anyone with exceptionally low vitamin B12 levels is likely to benefit from taking OneVit Vitamin B12 quickly.
OneVit Iron tops our list of recommended supplements to take with OneVit Vitamin B12, given the collective boost this dynamic duo provides to your blood oxygen levels.
Iron aids the production of haemoglobin, which binds oxygen molecules with red blood cells, while vitamin B12 ensures the production of healthy red blood cells to begin with.
Taking them together can keep your blood enriched with oxygen so your muscles and organs get the energy they need at a cellular level for optimal functioning.
OneVit Vitamin B12 also pairs brilliantly with OneVit Magnesium for next-level nerve support. Vitamin B12 safeguards nerves from damage and magnesium calms the nervous system. When taken together, these supplements can keep you calm, focused and mentally agile.
Yes, OneVit Vitamin B12 is 100% vegan and vegetarian-friendly.
OneVit Vitamin B12 does not contain common allergens. However, if you have specific sensitivities, it’s always best to check the ingredient list to ensure it’s safe for you.
If you are pregnant or breastfeeding, it’s always recommended to consult with your GP or healthcare provider before taking OneVit Vitamin B12 to ensure it’s the right choice for you.
We would recommend speaking with your doctor if you want to take OneVit Vitamin B12 alongside any medication. While we aren’t aware of any contraindications between OneVit Vitamin B12 and a specific type of medicine, it’s always better to be on the safe side.
- https://www.ncbi.nlm.nih.gov/books/NBK537254/#:~:text=Megaloblastic%20anemia%20is%20most%20often,known%20causes%20of%20megaloblastic%20anemia.
- https://books.google.co.uk/books?id=kvSODwAAQBAJ&lpg=PA85&ots=BjNsbvo-c9&dq=vitamin%20b12%20immune%20system&lr&pg=PA85#v=onepage&q=vitamin%20b12%20immune%20system&f=false
- https://onlinelibrary.wiley.com/doi/abs/10.1046/j.1365-2249.1999.00870.x
- https://link.springer.com/article/10.1007/s002470050090
- https://pmc.ncbi.nlm.nih.gov/articles/PMC10305463/
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