10 Best Doctor B12 in The UK

Last updated on 16/07/2025

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Doctor's Best, Energy Plus, with Coenzyme Q10, NADH and Vitamin B12, 2-Day Dose, 60 Vegan Capsules, Gluten-Free, SOYA-Free, Vegetarian, Non-GMO

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Why We Love It

Convenient high-dosage one capsule regime.
Superior bioavailability suitable for vegans.
Independently tested for purity.

Main Highlights

HIGH-DOSAGE: One dose, one capsule every 2 days, Energy Plus from Doctor's Best contains 1000mg of vitamin B12, 200mg of coenzyme Q10 and 20mg of NADH that you can give your body every day
GOOD BIOAVAILABILITY: Doctor's Best Energy Plus is characterised by good bioavailability and is suitable for a vegan diet
HIGH QUALITY: Doctor's Best vitamin B12 capsules are tested for quality and purity in independent laboratories
WITHOUT UNWANTED ADDITIVES: NADH capsules from Doctor's Best are gluten-free and produced without genetic engineering
IMPORTANT NUTRIENTS: Energy Plus from Doctor's Best contains 1000mg vitamin B12, 200mg Q10 and 20mg, important nutrients involved in many processes in the human body

Dr. Schulze's Original Superfood Plus 400g - Vegan, Green, Phytonutritional Smoothy Powder - High Levels of B6, B12 and Protein

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Why We Love It

Energizing with high vitamin content.
Suitable for everyone's dietary needs.
Easy and quick preparation.

Main Highlights

High level Vitamin B6 and B12 - so you can feel energised, immune supported, nerve-nourished and mind-balanced. High in plant protein for healthy muscles and bones.
Nutritional Information per 100 Grams: Energy 1380kj - 328 cal, Fat 5g (of which saturates) 0.8g, Carbohydrates 40g (of which are sugars) 5.4g, Fibre 23g, Protein 42g, Salt 1g, Vitamin B6: 33mg, Vitamin B12: 275mcg,
All the ingredients have been naturally dried and then tumble blended for less than two minutes to preserve their nutritional vitality and integrity. Suitable for vegetarians and vegans. The saccharomyces yeast is non-active and therefore suitable for those with yeast issues. Please note Vitamin A is as Beta Carotene and is sourced food state.
Suitable for children, adults and the elderly. Can be used during pregnancy and breastfeeding. It can replace any normal meal or provide 'between-meal' eating where extra nourishment and support is needed.
Simply hand whisk in seconds in juice or water and drink on the go or make into a smoothies with other ingredients added. Store in dry place and cool place.

Doctor's Best - Fully Active B12 | Supports Energy Metabolism and Nervous System Health - 1500mcg, 180 vcaps

14% Off

Why We Love It

Boosts energy levels effectively.
Supports nerve health naturally.
Vegan-friendly for all diets.

Main Highlights

⚡ Energy Metabolism Support: Provides 1500mcg of active B12, essential for energy production and vitality
🧠 Nervous System Aid: B12 plays a key role in maintaining nerve cell health and cognitive function
🌱 Vegan-Friendly Capsules: Made as vegan capsules, ideal for those on a plant-based diet
💊 Enhanced Absorption: Active B12 for optimal bioavailability and effective utilization by the body
🍃 Pure & Clean Formula: Free from artificial additives, focusing on delivering high-quality B12 support

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.

Main Highlights

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.

Doctor's Best - Fully Active B12 (1500mcg) | Supports Energy Production and Nerve Health - 60 Veggie Capsules

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Why We Love It

High-dose energy support.
Promotes nerve health.
Vegan-friendly and clean.

Main Highlights

⚡ High-Dose B12 Support: Packed with 1500mcg of B12, this supplement helps fuel energy production, keeping you energized throughout the day
🧠 Nerve Health Aid: Essential for nerve cell maintenance, B12 contributes to healthy nerve function, enhancing mental clarity and focus
🌱 Vegan-Friendly Capsules: Formulated as veggie capsules, perfect for those seeking plant-based solutions without compromising on potency
🔄 Enhanced Absorption: Uses methylcobalamin, a readily absorbed form of B12, ensuring your body efficiently utilizes this essential nutrient
💚 Pure & Clean Formula: Free from artificial additives, Doctor's Best Fully Active B12 supports your health with only what you need, nothing extra

Doctor's Best, Fully Active B12, 1.500mcg, 3-Day-Depot, 60 Vegan Capsules, Vitamin B12, Gluten Free, SOYA Free, Vegetarian

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Why We Love It

High dosage, convenient regimen.
Good vegan bioavailability.
Tested for quality, purity.

Main Highlights

HIGH-DOSAGE: One dose, one capsule every three days, Fully Active B12 from Doctor's Best contains 1,500 mg of vitamin B12 that you can give your body every third day
GOOD BIOAVAILABILITY: Doctor's Best Fully Active B12 is characterised by good bioavailability and is suitable for a vegan diet
HIGH QUALITY: Doctor's Best Fully Active B12 capsules are tested in independent laboratories for quality and purity
WITHOUT UNWANTED ADDITIVES: Fully Active B12 capsules are gluten-free, soy-free and produced without genetic engineering
IMPORTANT NUTRIENTS: Fully Active B12 from Doctor's Best contains 1,500 mg of vitamin B12, which can be taken every three days and can support important processes in the body

Doctor's Best Fully Active B Complex with Quatrefolic, 30 Vegan Capsules, Energy & Nerve Health Supplement with Methylfolate

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Why We Love It

Bioactive B vitamins for absorption.
Quatrefolic enhances folic acid absorption.
Supports physical and mental performance.

Main Highlights

B-complex supplement: contains all 8 B vitamins in bioactive form, for optimal absorption and use in the body
With Quatrefolic: Quatrefolic is an advanced form of folic acid (methylfolate), which is better absorbed by the body
Energy and nervous health: B vitamins play an important role in energy production and support the health of the nervous system
Vegan and allergy free: our capsules are vegan and free from common allergens, perfect for different nutritional requirements
Stress support: B vitamins can help support physical and mental performance in stressful situations

Flebo Premium Vitamin B12 Tablets High Strength, Cyanocobalamin B12 1000mcg, 120, Vegan B12 Supplement Made in UK to Help Reduce Tiredness and Fatigue- Recommended by UK Doctors at Flebo.

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Why We Love It

Premium purity and bioavailability.
Supports energy and cognition.
4-month supply, excellent value.

Main Highlights

✔ QUALITY PREMIUM SUPPLEMENT- Each tablet boasts the purity and effectiveness of cyanocobalamin, a form of Vitamin B12 known for its exceptional bioavailability. With a robust 1000mcg dose of cyanocobalamin in every tablet, our supplement ensures your body receives the optimal amount of this crucial nutrient.
✔ BENEFITS OF VITAMIN B12 Tablets - Our supplement offers a range of benefits, including increased energy levels to combat fatigue, improved cognition and focus for mental clarity, contributions to heart health by regulating key factors, support for nerve function, and the strengthening of your immune system to keep you protected.
✔ 4 MONTH SUPPLY- Enjoy a 4-month supply of our premium b12 vitamins high strength, delivering long-lasting support for your health and exceptional value for money
✔ ACCREDITED, COMPLIANT AND MADE IN UK- Our high quality products are UK certified and manufactured under the highest standards in the world ensuring your safety and satisfaction. Our formulation is suitable for vegan, vegetarians and halal friendly. Our supplements are proudly made in the UK, free from artificial colours, easy to swallow, GMO-free, and GMP certified
✔ TRUSTED BY UK DOCTORS AT FLEBO- Trust in the expertise of renowned UK doctors at Flebo, who highly recommend our supplements for your well-being

Hippowarehouse Probably The World's Best Doctor Kids Children's Unisex Hoodie Hooded top Black

Why We Love It

Made to order quickly.
Various sizes for kids.
Matching items available too.

Main Highlights

Made to order and despatched within 24-48 hours (WEEKDAYS)
Available in sizes 3-4yrs 26", 5-6yrs 28", 7-8yrs 30", 9-11yrs 32", 12-13yrs 34".
Matching clothing/merchandise/accessories available in our storefront.
Created by our in house design team.
Highest quality child safe vinyl. Contact us under contact seller for any queries about designs.

Daily Vitamin B12, 2000ug | High Strength Energy Support | 30 Vegan Capsules | One-A- Day | DR.VEGAN

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Why We Love It

Boosts energy and heart.
Essential for vegan diets.
Free from allergens.

Main Highlights

ENERGY VITAMIN: The ultimate energy supplement, our Vitamin B12 will boost your energy levels and help maintain a healthy heart. Perfect for supporting your overall vitality.
FORMULATED BY NUTRITIONISTS: A deficiency in Vitamin B12 can lead to fatigue, tiredness, and impact your nervous system. It may also cause constipation and anemia. Our B12 formula can help address a deficiency and supports your sustained energy throughout the day.
IDEAL FOR PLANT BASED LIFESTYLE: Vitamin B12 is important for those on low- or non-meat diets who may be at higher risk of deficiency. It plays a crucial role in cell growth and division, red blood cell formation, and overall wellbeing.
ALLERGEN FRIENDLY: Free from common allergens, including gluten, dairy, lactose, sugar, and starch. It's ideal for those on gluten-free, dairy-free, or other special diets.
100% PLASTIC-FREE: Pouches contain zero plastic and instead use starch-based seals, plant-based inks and paper for a better planet and a sustainable alternative.

8.9

Excellent

We scanned 283 products

We reviewed these offers relevant to the Doctor B12 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 Doctor's BEST, Herbs Hands Healing, DoctorsBEST, Nature Provides, Flebo, Hippowarehouse, dr vegan, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.

For the best Doctor B12 in the market, we considered we took a deep dive into 1416 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 Doctor's Best, Energy Plus, with Coenzyme Q10, NADH and Vitamin B12, 2-Day Dose, 60 Vegan Capsules, Gluten-Free, SOYA-Free, Vegetarian, Non-GMO. We love many things about this product by Doctor's BEST. What sets it apart from the competition is Convenient high-dosage one capsule regime, Superior bioavailability suitable for vegans, Independently tested for purity.
The best value product for most shoppers and where user satisfaction is continuously the highest is Dr. Schulze's Original Superfood Plus 400g - Vegan, Green, Phytonutritional Smoothy Powder - High Levels of B6, B12 and Protein by Herbs Hands Healing based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for Doctor B12 and the best cost-to-value ratio is Doctor's Best - Fully Active B12 | Supports Energy Metabolism and Nervous System Health - 1500mcg, 180 vcapsat DoctorsBEST with a 14% discount.
Our list of the best Doctor B12 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 Doctor B12 in The UK

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We concluded that: