10 Best Vitamin B12 Supplements in The UK

Last updated on 16/07/2025

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Why We Love It

Natural form of Vitamin B12.
Quality ingredients guaranteed.
Expert-backed innovative solutions.

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WHAT IS VITAMIN B12? Vitamin B12 is necessary for the formation of red blood cells that carry oxygen and nutrients around our bodies. It's also important for your immune health, normal psychological function, and normal energy-yielding metabolism.
WHY CHOOSE HEALTHSPAN? They use the methylcobalamin form of vitamin B12 as a natural alternative that is found in foods and the human body, replacing the more commonly used cyanocobalamin. This also results in a much smaller, easy-to-swallow tablet.
QUALITY INGREDIENTS FIRST: Healthspan work harder to seek out the best-quality ingredients for their supplements. They source and manufacture their range, ensuring optimal purity and quality along the way so whether it is faster-acting, better-absorbed, filtered for optimal purity or simply contains more active ingredients, they're confident you won't find better quality.
INNOVATIVE SOLUTIONS, BACKED BY EXPERTS: Healthspan has 25 years' experience working closely with trusted research partners and experts. They thoroughly test and perfect their products with in-house doctors and nutritionists to bring you the latest developments in nutritional supplements.
THE HEALTHSPAN WAY: Here's something you may not know – Not All Supplements Are Created Equal. There can be considerable differences in product quality, purity and sustainability. Healthspan strive to bring you the most innovative solutions for maximum benefit: that's just The Healthspan Way.

Vitamin B12 High Strength 1000mcg - 1+ Year Supply - 400 Chewable & Vegan Vitamin B12 Tablets - Sugar-Free Methylcobalamin - Vit B12 Supplement for Tiredness & Fatigue - Lemon Flavour - Made in The UK

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Why We Love It

Enjoyable lemon flavoured chewables.
Promotes energy and immunity.
Gluten, dairy & GMO-free.

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REFRESHING LEMON-FLAVOURED VITAMIN B12 SUPPLEMENTS: Our Methylcobalamin B12 supplements (not Vitamin B12 liquid drops) offer a delightful lemon flavour & have a satisfying chewy texture, making them a better choice than traditional Vitamin B12 sublingual tablets that are hard to swallow. Our chewable Vitamin B12 tablets high strength are a great alternative to sublingual B12 Methylcobalamin, which is bitter. Consume a single high-strength Vitamin B12 tablet daily for your energy & brain health.
400 VITAMIN B12 CHEWABLE TABLETS (1+ YEAR SUPPLY): Our high-strength vitamins for tiredness & fatigue deliver 1000mcg of Methylcobalamin (the most biologically active form of Vitamin B12) per serving, which means the body absorbs it easily. As the B12 Vitamin is found in animal-based foods like eggs, meat, & milk, our vegan B12 supplement is ideal for people who follow a plant-based diet. Incorporate our chewable vegan Vitamin B12 tablets high-strength into your daily routine to feel fresh.
IMMUNITY & ENERGY TABLETS: Feeling overwhelmed while carrying out simple everyday activities? Our high-strength Vitamin B12 tablets are here! Vitamin B12 contributes to the reduction of tiredness & fatigue. Vitamin B12 also contributes to normal energy-yielding metabolism and the functioning of the nervous & immune systems (EFSA Claims), making it a significant energy tablet for tiredness. Experience the energy from the inside with our Vitamin B12 methylcobalamin supplement!
GLUTEN, DAIRY & GMO-FREE: Our vegan Vitamin B12 high strength is made from premium-grade ingredients to ensure you get only the best. Our non-GMO Vitamin B12 energy tablets are free from gluten, nuts, sugar & allergens, which makes them suitable for everyone. Our chewable Vit B12 high-strength tablets (not b12 sublingual) are manufactured, batch-tested and certified in the UK under GMP guidelines.
WEIGHTWORLD – INSPIRING WELLNESS SINCE 2006: A British-grown family business with 18+ years of experience formulating and manufacturing 200+ vitamins, food supplements and health devices. All our products are made using premium quality ingredients and have gone through intensive research to meet the daily nutritional requirements of people across the globe. We create UK-made, GMP-certified products aimed at promoting a healthier body & mind for you and your family.

Vitamin B12 Gummies 1,500mcg (per Gummy) - High Strength Methylcobalamin Supplement - Non-GMO, Gluten Free, Raspberry Flavour - 60 Vegan Gummies.

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Why We Love It

Supports energy and vitality.
Delicious strawberry-flavoured gummies.
Non-GMO and vegan.

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✔ WHY VITAMIN B12?: Vitamin B12 is an essential micronutrient that plays a significant role in many bodily functions. It supports energy and vitality, nerve function, psychological function, immune health, and red blood cell formation. These delicious strawberry-flavoured gummies have been developed for both adults and children (over the age of 4 years).
✔ THE ACTIVE FORM: Each fruity serving contains 1500mcg of the active form methylcobalamin, which is equivalent to 60,000% of your daily requirement. This may seem very high, but vitamin B12 is poorly absorbed by the body and deficiency is common. This is why it is important to make sure that you are buying the strongest and most bioavailable form of vitamin B12.
✔ NATURAL ENERGY: Among its many health benefits, vitamin B12 is particularly good at supporting energy production within the body. This energising vitamin also helps to reduce feelings of tiredness and fatigue, giving you an extra Alpha01 bounce in your step!
✔ ALPHA01 PROMISE: Proudly sourced in the EU, we bring you only the highest quality ingredients – so you can feel comfortable about what you’re putting in your body. All of our products are GMP certified and fair trade.
✔ OUR VALUES: This product is 100% non-GMO, vegan, gluten-free, dairy free, and nut & seeds free.

Vitamin B12 Gummies - 120 Gummies - 4 Months Supply - 1000mcg - 1 per Day - Vegan & Gluten-Free - Tasty, Natural Pomegranate Flavour - Bioavailable Methylcobalamin Form - B12 Vitamin Supplement

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Why We Love It

Delicious natural strawberry flavor.
Easy-to-chew daily gummies.
Vegan and gluten-free.

Main Highlights

4 MONTHS SUPPLY - 120 GUMMIES: Each gummy delivers 1000mcg of Vitamin B12 as Methylcobalamin - a highly bioavailable and active form of B12. This naturally occurring and stable form is easily absorbed and directly utilised, without needing conversion. WeightWorld's Vitamin B12 Gummies offer a great option for those looking to include an effective source of this vitamin in the daily routine. Each bottle of B12 Vitamin Supplement contains 120 gummies, providing a generous 4 months supply.
TASTY & NATURAL FLAVOUR: WeightWorld's Vitamin B12 Gummies offer a delicious, natural pomegranate flavour, making daily consumption enjoyable rather than a chore. Free from artificial flavours, this Vitamin B12 Supplement provides a safe and wholesome way to keep B12 levels in check. No water needed; simply chew one gummy per day to enjoy the goodness of Vitamin B12 Methylcobalamin in a convenient and tasty way.
KEEP UP WITH LIFE: Vitamin B12 contributes to the reduction of tiredness and fatigue. Vitamin B12 contributes to normal energy-yielding metabolism. Vitamin B12 contributes to the normal function of the immune system. Vitamin B12 contributes to normal red blood cell formation. Vitamin B12 contributes to normal functioning of the nervous system. Vitamin B12 contributes to normal psychological function. Vitamin B12 has a role in the process of cell division (EFSA Claims).
VEGAN-FRIENDLY & GLUTEN-FREE: Since Vitamin B12 is typically found in animal-based foods like meat and dairy, it can be challenging for vegans and vegetarians to get enough through diet alone. WeightWorld's Vit B12 Gummies provide a plant-based alternative for a vegan lifestyle. These Methylcobalamin B12 Vitamin Gummies are carefully formulated with non-GMO ingredients and manufactured in GMP-approved facilities. In case of any concerns, feel free to reach out.
THE JOURNEY OF WEIGHTWORLD: Born from a passion for food supplements, WeightWorld has been growing since 2006. With nearly two decades of experience, the brand offers a wide range of products, including vitamins, minerals, plant-based supplements, devices, and more. Now reaching multiple countries, the focus remains on developing products that evolve with changing needs while staying true to the values that started it all.

Vitamin B12 Liquid Drops (3000 mcg) Made in UK by Nature Provides - Methylcobalamin + Adenosylcobalamin (50ml), High Strength, Bioactive, Vegan, Energy & Sleep Support, Sublingual, Like B12 injections

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Why We Love It

Highly bioavailable for maximum absorption.
Supports immune function and metabolism.
Free from artificial additives.

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Why nature provides’ bioactive B12? Bioactive B12 provides you with a high strength (3000mcg per daily dose) and highly bioavailable source of Vitamin B12. The liquid formula uniquely combines both Methylcobalamin and Adenosylcobalamin, which are already in a methylated, active form, making them readily usable by the body without the need for conversion ( helpful for those with the MTHFR gene mutation, which around 35% of the population have but are not aware).  
How to take bioactive B12? Easy to take and tasteless, Bioactive B12 is designed to be taken sublingually (under the tongue) for optimal absorption. Simply take 1ml (13 drops) and hold the liquid under your tongue for 30 seconds before swallowing. This method bypasses the gastrointestinal tract, allowing it to go directly into your bloodstream for faster and more effective results. The liquid formula makes it easy to adjust the dose to suit your daily requirements.
Support your health: Bioactive B12 promotes Mental Focus, a Healthy Nervous System, Cardiovascular Health (by fighting homocysteine), Energy Production, Adrenal Function and supports your Immune System. B12 is an essential vitamin which is involved in a significant number of actions within the body.
Premium quality, no additives: With just 3 ingredients (Methylcobalamin, Adenosylcobalamin and reverse osmosis water) Bioactive B12 is Vegan-friendly, 100% GMO-Free and contains NO colours, flavourings, sugar or preservatives. Packaged in Miron UV-proof glass for natural protection against UV light, we use only the purest ingredients.
Customer peace of mind: At Nature Provides, we aim to provide comprehensive information and support. If you have any questions, our friendly team is available to offer personalised assistance to help integrate this supplement into your lifestyle. We strive for 100% customer satisfaction and are here to help if you are not completely happy with your purchase.

Vitamin B12 Tablets - 1000mcg - Vegan B12 Supplement - 450 Methylcobalamin Tablets (1+ Year Supply) - 1 Per Day - 6mm in Size - Easy to Swallow - Made in The UK

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Why We Love It

Boosts energy and brain health.
Suitable for vegans and vegetarians.
Premium-quality, allergen-free vitamins.

Main Highlights

LONG-LASTING SUPPLY: WeightWorld's Vitamin B12 1000mcg Tablets contain Methylcobalamin, an active form of Vitamin B12. Easy to swallow, each 6mm tablet delivers 1000mcg of Methylcobalamin (40,000% NRV). Each bottle contains 450 tablets, providing a supply that lasts well over a year.
ESSENTIAL VITAMIN FOR VEGANS: Since vitamin B12 cannot be stored in the internal system, it must be obtained through diet. Naturally present in shellfish, meat, and dairy, maintaining adequate B12 levels can be challenging for vegans and vegetarians. WeightWorld's Vitamin B12 Supplement is vegan-friendly and thoughtfully formulated to suit any lifestyle
MULTIPLE BENEFITS OF VIT B12 SUPPLEMENTS: Vitamin B12 contributes to normal energy-yielding metabolism, psychological function, and red blood cell formation and has a role in cell division. Also, B12 vitamin contributes to the normal function of the immune and nervous systems and the reduction of tiredness and fatigue (EFSA).
Non-GMO & GLUTEN-FREE: WeightWorld's Vitamin B12 Supplements are made in the UK under GMP guidelines. These carefully formulated vitamin B12 tablets are gluten-free, non-GMO, and formulated to support a variety of dietary needs.
TRUSTED FOR HEALTH SINCE 2006: A British-grown family business with over a decade of experience, offering a range of over 200 vitamins, supplements, and devices. All products are developed through thorough research, adhering to GMP standards, and crafted in the UK to meet diverse nutritional requirements. Suitable for vegans and vegetarians, they are formulated to provide a wholesome approach to living.

Vitamin B12 Tablets High Strength - 1 Year Supply (365 Tablets) - 1000mcg Dual Power B12 Vitamin Complex with Methylcobalamin & Adenosylcobalamin - Vegan Supplement - (Packaging Design May Vary)

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Why We Love It

Innovative dual-form B12 supply.
Effortless consumption, no aftertaste.
Sustainable and affordable nutrition.

Main Highlights

12 Month Supply of Vitamin B12 Dual Power: Did you know your body requires two active forms of B12: Methylcobalamin & Adenosylcobalamin. Clinical studies show both forms should be combined for best results in treating B12 deficiency. Each pouch contains 365 B12 vitamins providing both forms in a unique 2:1 ratio.
Easy to Swallow With No Aftertaste: Our b12 tablets have been uniquely formulated to be just 6mm in diameter - so small you won't even notice when you swallow them! Although smaller, Nutrition Geeks' Vitamin B 12 provides 1000μg (40,000% NRV) per tablet, providing maximum support your immune system & reduce tiredness.
Letterbox Friendly and Space Saving: Nutrition Geeks' vitamins for women and men come in flat pack packaging, saving on costly postage and storage fees associated with other bottled b12 capsules, vitamin b12 spray, b12 liquid, b12 patches, b12 injections and vitamin b complex high strength.
Vegan Friendly, Gluten-free, Dairy-free, Cruelty-free, Low Carbon Footprint: We understand the importance of providing vitamins that caters to everyone's needs; are sourced & produced ethically AND accessible to all customers. There is no need to go anywhere else for your nutrition needs!
Scientifically Proven Supplements Uncomplicated, So You Can Get The Most Out of Life. Affordable For Everyone. Delivered To You Sustainably: Good health is a need not a want. We are on a mission to make quality, science backed nutrition sustainably accessible to everyone. Less plastic, less waste. We have also committed to be the UK's leading sustainable supplement provider with a Net Zero target by end of 2025.

Zipvit Vitamin B12 Tablets High Strength 1100mcg, 1 Year Supply, Pure Methylcobalamin, 360 Vegan Tablets, Reduces Tiredness, Improves Energy, Supports Immunity

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Why We Love It

Boosts energy and immunity.
Safe for vegans.
Free from allergens.

Main Highlights

Feel Energised Every Day: Our Vitamin B12 tablets high strength are designed to help your body turn food into energy, making them ideal for reducing tiredness and fatigue. Whether it’s work, workouts, or family time, this high-strength B12 supplement supports your energy levels so you can stay on top of your game.
Keep Your Brain and Body in Sync: This essential Vitamin B supports brain health and keeps your nervous system working normally. Our B12 vitamins for women and men also promote healthy red blood cells, which supports oxygen to flow properly throughout your body.
Superior Absorption with Methylcobalamin: Our Vitamin B12 tablets use Methylcobalamin, a highly bioavailable form of B12 that your body absorbs and uses efficiently. This ensures maximum effectiveness, making it an excellent choice for addressing vitamin B12 deficiencies and supporting overall well-being.
Vegan-Friendly: Our vitamin B12 tablets are vegan-friendly and free from gluten, GMOs, dairy, and wheat, making them a great choice for anyone following a plant-based lifestyle. These easy-to-swallow B12 vitamins for men and women require just one tablet a day, helping you simplify your routine. Each pouch provides a 12-month supply of vit B12 high strength tablets, offering great value and consistent support.
Trusted for 25 Years: For 25 years, Zipvit has been a trusted name in health and wellness. We are committed to quality, transparency, and affordable pricing. Trusted by millions, we support your health journey every step of the way.

Vitamin B12 High Strength Tablets - 1000mcg Vegan B12 Vitamin Methylcobalamin Supplement – Contributes to The Reduction of Tiredness and Fatigue & Immune Energy Support Made in the UK (4 Month Supply)

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Why We Love It

Boosts energy, reduces fatigue.
Ideal for vegans.
Quality tested, trusted brand.

Main Highlights

B12 VITAMIN HIGH STRENGTH – Our vitamin b12 high strength tablets provide 1000mcg equivalent to 40000% NRV in a micro small tablet that is easy to swallow without an aftertaste. We use B12 methylcobalamin which is a naturally occurring form of Vitamin B12 that you can get through either food sources or supplements.
ENERGY TABLETS FOR TIREDNESS – B12 vitamin is one of the essential B vitamins needed in the body so that all tissues function correctly. It helps to turn food into energy and keeps the nervous system healthy. Vitamin B12 contributes to the reduction of tiredness and fatigue as well and the functioning of the immune system, nervous system and normal phycological function.
VEGAN B12 TABLETS HIGH STRENGTH – Vitamin B 12 is arguably the most important nutrient in vegan nutrition. B12 vitamin is found in meat, dairy, and eggs. There are no reliable plant sources of B12. Luckily, B12 is made by bacteria and doesn’t need to be obtained from animal products allowing vegans to obtain B12 through supplements and fortified foods.
SAFETY & QUALITY - To uphold the highest standards of safety and quality, our products undergo post-production testing for heavy metals and other unwanted compounds, ensuring full compliance with international regulations. Once testing is complete, products are bottled and packaged in BRC Grade AA certified facilities, guaranteeing that our rigorous quality standards are reliably maintained and delivered to you.
Why Choose New Leaf Products? As a family-owned business with extensive experience in formulating and producing our unique range of over 100 vitamin and mineral supplements, we are dedicated to upholding the highest standards of safety and quality. We prioritise environmental sustainability and social responsibility, donating a portion of our sales to global causes. Join our community of over 2 million satisfied customers, where our customers are always our top priority.

Vitamin B12 1000mcg - 365 High Strength Vegan Tablets (1 Year Supply) - Max Strength B12 Supplement - Contributes to The Reduction of Tiredness and Fatigue - Made in The UK by Nutravita

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Why We Love It

Provides efficient B12 absorption.
Supports immune system health.
Suitable for vegans, vegetarians.

Main Highlights

✔ WHY NUTRAVITA'S VITAMIN B12 1000mcg? – Our Vitamin B12 supplement comes with a 12 month supply unlike many other Vitamin B12 supplements on the market which only offer a half year supply. Furthermore, our 1000mcg Vitamin B12 tablets are derived from Methylcobalamin, a pure and active form of B12 for efficient absorption. By purchasing our supplement you can be rest assured that you are getting one of the best value for money supplement on the market.
✔ BENEFITS OF TAKING VITAMIN B12 – All 8 types of Vitamin B have essential roles for various processes in the body to maintain good health and well-being. The form Methycobalamin of Vitamin B12 contributes to normal function of the immune system; normal energy-yielding metabolism and red blood cell formation; as well as normal psychological and nervous system function. All claims are substantiated by EFSA (European Food Safety Authority).
✔ WHO SHOULD TAKE VITAMIN B 12? – Nutravita’s Vitamin B12 are suitable to be taken by both men and women and are vegan and vegetarian friendly. It does NOT contain GMO ingredients and are free from allergens such as gluten, lactose, soya, nuts and nut traces.
✔︎ QUALITY TESTED - Unlike many supplements, we haven't spared any expense on quality. Each ingredient is quality tested before the manufacturing process begins, every batch of our supplement undergoes further rigorous quality testing. We have done our best to provide as much information as possible, but if you do have any questions please reach out to our very helpful customer care team. They will be happy to provide personalised assistance to help this supplement fit into your lifestyle.
✔ WHAT IS THE STORY BEHIND NUTRAVITA? - Nutravita is a recognised and trusted Vitamins & Supplements brand providing thousands of customers across the world since 2014. Our high quality products are manufactured, batch tested and certified in the UK, and safeguarded by the highest manufacturing standards in the world (GMP, BRC). We have a dedicated team of pharmacologists, chemists and research scientists working to source the finest and most beneficial ingredients.

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We scanned 298 products

We reviewed these offers relevant to the Vitamin B12 Supplements within online retailers such as Amazon, eBay and other local retailers, ensuring we covered all major brands and models. The products we selected come from trusted brands like healthspan, WeightWorld, ALPHA01, Nature Provides, Nutrition Geeks, Zipvit, NEW LEAF PRODUCTS, Nutravita, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.

For the best Vitamin B12 Supplements in the market, we considered we took a deep dive into 1491 online reviews , focusing on elements like user satisfaction, performance in real-world conditions, and long-term reliability. Our ranking also evaluates each review’s relevancy, authenticity, up-to-dateness and depth so that the comparison is more sound.

We concluded that:

The clear winner of our analysis is Healthspan Vitamin B12 1,000µg | 240 Tablets | Immune Support | Tiredness & Fatigue | One-A-Day Tablet | Easy to Swallow | Vegan. We love many things about this product by healthspan. What sets it apart from the competition is Natural form of Vitamin B12, Quality ingredients guaranteed, Expert-backed innovative solutions.
The best value product for most shoppers and where user satisfaction is continuously the highest is Vitamin B12 High Strength 1000mcg - 1+ Year Supply - 400 Chewable & Vegan Vitamin B12 Tablets - Sugar-Free Methylcobalamin - Vit B12 Supplement for Tiredness & Fatigue - Lemon Flavour - Made in The UK by WeightWorld based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for Vitamin B12 Supplements and the best cost-to-value ratio is Healthspan Vitamin B12 1,000µg | 240 Tablets | Immune Support | Tiredness & Fatigue | One-A-Day Tablet | Easy to Swallow | Veganat healthspan with a 25% discount.
Our list of the best Vitamin B12 Supplements is updated regularly to reflect new releases and changes in product availability, so be sure to check back often for the latest rankings and discounts.

10 Best Vitamin B12 Supplements in The UK

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We scanned 298 products

We concluded that: