Skip to product information
1 of 1

  • Images are for illustration purposes only

BetterYou Boost B12 Oral Spray - 25ml

BetterYou Boost B12 Oral Spray - 25ml

  • 1. Ozempic®️-equivalent therapy now available for weight management
  • 2. Average weight loss of 17%, with 1 in 3 patients achieving over 20%
  • 3. May help reduce osteoarthritis-related pain
  • 4. Wegovy®️ is not expected to impact the effectiveness of oral contraceptives
  • 5. Supports cardiovascular risk reduction
  • 6. Over 22 million patients treated with semaglutide-based therapies since 2018

  • ✔️ Delivers vitamin B12 directly via oral mucosa for efficient absorption
  • ✔️ Supports energy metabolism and reduces tiredness and fatigue
  • ✔️ Bypasses the gut — ideal for those with absorption difficulties
  • ✔️ Suitable for vegans, vegetarians, and older adults daily
  • ✔️ Convenient spray format — no tablets to swallow

Price Checker

Regular price £7.99
Sale price £7.99
Sale Sold out
  • Lowest price guarantee
  • Includes FREE private prescription

Purchase Options

View full details

 

What Is Vitamin B12 Oral Spray and How Can It Help You?

 

Vitamin B12 is one of those nutrients that quietly does a lot of heavy lifting. It plays a key role in producing red blood cells, supporting normal neurological function, and helping your body release energy from food. Yet it's also one of the most common nutritional deficiencies in the UK — particularly among vegans, vegetarians, older adults, and people taking certain long-term medications. The vitamin B12 oral spray format offered by BetterYou is designed to make supplementation easier and more efficient, especially for those who struggle to absorb B12 through the gut. You can browse the full range of vitamins and supplements at Cured Pharmacy if you're looking to support your overall health alongside this product.

The NHS notes that vitamin B12 deficiency can cause tiredness, weakness, and neurological symptoms if left unaddressed. BetterYou Boost B12 Oral Spray delivers cyanocobalamin — a stable, well-studied form of B12 — directly into the mouth, where it can be absorbed through the oral mucosa rather than relying on the digestive system.

 

How Does BetterYou Boost B12 Oral Spray Work?

 

Traditional B12 tablets rely on a protein called intrinsic factor, produced in the stomach, to facilitate absorption in the small intestine. Some people — particularly older adults or those with gastrointestinal conditions — produce less intrinsic factor, which limits how much B12 they can absorb from tablets or food. Oral sprays sidestep this issue entirely.

  • The spray is directed onto the inner cheek or under the tongue.
  • Cyanocobalamin is absorbed directly through the oral mucosa into the bloodstream.
  • This bypasses the digestive tract, reducing reliance on intrinsic factor.
  • The result is a more direct route to the cells that need it.

This delivery method is particularly useful for people who have had gastric surgery, take proton pump inhibitors long term, or simply find swallowing tablets difficult.

 

Who Should Consider Using BetterYou Boost B12 Oral Spray?

 

This spray is suitable for a wide range of people. It's not a medicine — it's a food supplement — but it addresses a genuine and common nutritional gap. The NHS recommends that vegans take a B12 supplement, as the vitamin is found almost exclusively in animal-derived foods.

  • Vegans and vegetarians with limited dietary B12 intake
  • Older adults, who are more likely to have reduced stomach acid and intrinsic factor
  • People taking metformin for type 2 diabetes, which can reduce B12 absorption
  • Those on long-term proton pump inhibitors (PPIs) such as omeprazole
  • Anyone who finds tablets difficult to swallow

If you have already been diagnosed with B12 deficiency by your GP, you may need prescription-strength treatment such as hydroxocobalamin injections. This spray is best suited to prevention and maintenance rather than treating a confirmed clinical deficiency.

 

How Does BetterYou Boost B12 Oral Spray Compare to B12 Tablets?

 

Feature BetterYou Boost B12 Oral Spray Standard B12 Tablet
Absorption route Oral mucosa (bypasses gut) Gastrointestinal tract (requires intrinsic factor)
Suitable for swallowing difficulties Yes No
Suitable for those with gut absorption issues Yes Limited
Form Liquid spray Solid tablet or capsule

 

Is BetterYou Boost B12 Oral Spray Suitable for Vegans and How Should It Be Stored?

 

Yes — this product is suitable for vegans and vegetarians. The formulation does not contain any animal-derived ingredients, making it a practical choice for those following a plant-based diet who are at higher risk of vitamin B12 oral spray-addressable deficiency. It is also free from artificial colours and flavours.

Store the spray below 25°C, away from direct sunlight and out of reach of children. Once opened, use within the period indicated on the packaging. Do not refrigerate unless instructed. If you're managing multiple health conditions and looking for other support products, you might also find our women's health range useful alongside your supplement routine.

This product is a food supplement, not a medicine. However, speak to your doctor or pharmacist before using if you have an underlying medical condition or are taking other medicines.

BetterYou Boost B12 Oral Spray 25ml specifications
Treatment category Vitamin B12 supplementation
Mechanism of action Delivers cyanocobalamin via oral mucosa absorption, bypassing gastrointestinal tract
Effective for Supporting energy metabolism, red blood cell formation, and nervous system function
Suitable for Adults; vegans; vegetarians; older adults; those on metformin or PPIs
Active ingredient Cyanocobalamin (Vitamin B12)
Pack size 25ml
UK classification Food supplement (not a licensed medicine)
Preparation Oral liquid spray
Route of administration Oral (buccal/sublingual absorption)

Specifications of BetterYou Boost B12 Oral Spray 25ml

 

What Is BetterYou Boost B12 Oral Spray and What Is It Used For?

 

BetterYou Boost B12 Oral Spray is a food supplement containing cyanocobalamin, a form of vitamin B12. It is used to help maintain adequate B12 levels in people who may not get enough from their diet or who have difficulty absorbing the vitamin through conventional oral routes. Vitamin B12 contributes to normal energy-yielding metabolism, the reduction of tiredness and fatigue, normal red blood cell formation, and the normal functioning of the nervous system — all functions recognised by the European Food Safety Authority (EFSA).

It is not a treatment for diagnosed B12 deficiency anaemia, which requires medical assessment and may need prescription therapy. This spray is intended for supplementation and maintenance in otherwise healthy adults.

 

What Do You Need to Know Before Using BetterYou Boost B12 Oral Spray?

 

Although vitamin B12 is generally considered safe at supplemental doses, there are some situations where you should seek advice before starting:

  • Do not use if you are allergic to cyanocobalamin or any other ingredient in the formulation.
  • If you have been diagnosed with Leber's disease (a hereditary optic nerve condition), cyanocobalamin is contraindicated — speak to your GP before use.
  • If you have a confirmed B12 deficiency, do not rely on this supplement alone — you may need hydroxocobalamin injections prescribed by your doctor.
  • Consult your GP or pharmacist if you are pregnant or breastfeeding, although B12 supplementation is generally considered safe in these groups when taken at recommended doses.
  • Not recommended as the sole treatment for children under 12 without medical supervision.

Regarding drug interactions, the following medicines are known to reduce B12 absorption or levels and may affect how well supplementation works:

  • Metformin (used for type 2 diabetes)
  • Proton pump inhibitors (e.g. omeprazole, lansoprazole)
  • H2 receptor antagonists (e.g. ranitidine, famotidine)
  • Colchicine (used for gout)
  • Some anticonvulsants

If you take any of these medicines regularly, speak to your pharmacist. You may also find it helpful to explore our vitamins and supplements range for complementary nutritional support.

 

How Should You Use BetterYou Boost B12 Oral Spray?

 

  1. Shake the bottle gently before each use.
  2. Remove the cap and point the nozzle towards the inside of your cheek or under your tongue.
  3. Press the pump firmly to release one spray.
  4. Repeat until you have taken the recommended number of sprays.
  5. Hold the liquid in your mouth briefly before swallowing to allow absorption through the oral mucosa.
  6. Replace the cap after use.
Indication Age Group Dose Frequency
General B12 supplementation Adults (18+) 4 sprays Once daily
Maintenance (dietary restriction) Adults (18+) 4 sprays Once daily
Children under 12 Under 12 Not recommended without medical advice

 

What Are the Possible Side Effects of BetterYou Boost B12 Oral Spray?

 

Vitamin B12 is a water-soluble vitamin, meaning excess amounts are generally excreted in urine rather than accumulating to toxic levels. Side effects are uncommon at supplemental doses, but they can occur.

Common side effects (may affect a small number of users):

  • Mild nausea, particularly if taken on an empty stomach
  • Headache
  • Diarrhoea

Less common side effects:

  • Skin flushing or redness
  • Itching or mild rash
  • A tingling sensation in the mouth or lips
  • Feeling anxious or restless

If you experience any signs of an allergic reaction — such as swelling of the face, lips, or throat, difficulty breathing, or a severe rash — stop using the product immediately and seek urgent medical attention. Serious allergic reactions to cyanocobalamin are rare but have been reported.

 

How Should You Store BetterYou Boost B12 Oral Spray?

 

Correct storage helps maintain the quality and effectiveness of the product throughout its shelf life. If you're building a broader supplement routine, our men's health range includes additional products that may complement your B12 supplementation.

  • Store below 25°C in a cool, dry place.
  • Keep away from direct sunlight and heat sources.
  • Do not refrigerate unless the label specifically instructs you to.
  • Keep the cap firmly closed when not in use.
  • Keep out of the reach and sight of children.
  • Do not use after the expiry date printed on the bottle.
  • Once opened, use within the period indicated on the packaging.

Written and reviewed by our qualified team

Your safety and success are our highest priorities. Our medical team rigorously evaluates every product and piece of advice we provide, ensuring you receive only the most effective, science-backed solutions available.

Frequently Asked Questions

Where can I buy BetterYou Boost B12 Oral Spray online in the UK?

You can buy BetterYou Boost B12 Oral Spray 25ml directly from Cured Pharmacy online for £7.99, with no prescription required. It is classified as a food supplement and is available over the counter. Browse our full vitamins and supplements range for more nutritional support products.

How does vitamin B12 oral spray work in the body?

The spray delivers cyanocobalamin directly onto the inner cheek or under the tongue, where it is absorbed through the oral mucosa into the bloodstream. This bypasses the digestive tract and avoids the need for intrinsic factor, which some people produce in insufficient quantities. It is a particularly useful route for those with gut absorption issues or who take medicines that reduce stomach acid.

How do I use BetterYou Boost B12 Oral Spray step by step?

Shake the bottle gently, remove the cap, and direct the nozzle towards the inside of your cheek. Press the pump to release the spray and hold the liquid briefly in your mouth before swallowing. Repeat until you have taken the recommended number of sprays — typically four per day for adults.

What is the recommended daily dose of BetterYou Boost B12 Oral Spray?

The recommended adult dose is 4 sprays per day, taken as directed on the product label. Do not exceed the stated dose unless advised to do so by a healthcare professional. Children under 12 should not use this product without medical supervision.

What is the best time of day to take B12 oral spray?

There is no strict requirement to take B12 at a specific time, but many people find it easiest to incorporate into their morning routine. Taking it at the same time each day helps build a consistent habit. Some people prefer to take it before eating to avoid any mild nausea that can occasionally occur.

Are there any side effects of using BetterYou Boost B12 Oral Spray?

Vitamin B12 is generally very well tolerated, and side effects are uncommon at supplemental doses. Some people may experience mild nausea, headache, or a tingling sensation in the mouth. If you notice any signs of an allergic reaction — such as swelling, difficulty breathing, or a severe rash — stop use immediately and seek medical attention.

Who is eligible to use BetterYou Boost B12 Oral Spray?

This spray is suitable for adults who have low dietary B12 intake or reduced absorption, including vegans, vegetarians, older adults, and those taking metformin or proton pump inhibitors long term. It is not intended to treat a clinically diagnosed B12 deficiency, which requires GP assessment and may need prescription treatment. Always check with your pharmacist if you are unsure whether it is right for you.

Is BetterYou Boost B12 Oral Spray suitable for vegans?

Yes, BetterYou Boost B12 Oral Spray is suitable for vegans and vegetarians. The formulation contains no animal-derived ingredients, making it a practical choice for those following a plant-based diet. The NHS specifically recommends that vegans supplement with vitamin B12, as it is found almost exclusively in animal foods.

What happens if I miss a dose of BetterYou Boost B12 Oral Spray?

If you forget to take your daily dose, simply take it as soon as you remember — unless it is nearly time for your next dose, in which case skip the missed one. Do not double up to compensate, as this is unnecessary for a water-soluble vitamin. Consistency over time matters more than any single missed dose.

Can I take BetterYou Boost B12 Oral Spray with other medicines?

Certain medicines — including metformin, proton pump inhibitors, H2 receptor antagonists, and colchicine — are known to reduce B12 absorption, which is one reason supplementation may be particularly beneficial for people taking them. However, you should always inform your pharmacist or GP about all supplements you are taking. No serious interactions between cyanocobalamin oral spray and other medicines are currently documented, but individual circumstances vary.

How long can you use BetterYou Boost B12 Oral Spray for?

This supplement can be used long term as part of a daily nutritional routine, particularly for those with ongoing dietary restrictions or absorption concerns. There is no established upper safe limit for oral B12 supplementation in healthy adults, as excess is excreted in urine. If you have a diagnosed deficiency, review your treatment plan with your GP periodically.

How does BetterYou Boost B12 Oral Spray compare to B12 injections?

B12 injections (hydroxocobalamin) are a prescription treatment used for confirmed B12 deficiency, particularly where absorption is severely impaired. The oral spray is a food supplement suitable for prevention and maintenance in people without a clinical deficiency. If your GP has recommended injections, do not substitute them with this spray without medical advice.

Can I use BetterYou Boost B12 Oral Spray during pregnancy?

Vitamin B12 is an essential nutrient during pregnancy and adequate intake is important for foetal neurological development. Supplementation at recommended doses is generally considered safe, but you should always discuss any supplements with your midwife or GP before starting them during pregnancy. Do not exceed the stated dose.

What are the alternatives to BetterYou Boost B12 Oral Spray?

Alternatives include standard cyanocobalamin tablets, sublingual B12 lozenges, and — for those with confirmed deficiency — prescription hydroxocobalamin injections. The oral spray format is particularly suited to those who prefer not to swallow tablets or who have absorption difficulties. You can explore our wider vegan supplement range for other plant-based nutritional options.

What does the latest research say about vitamin B12 oral sprays?

Research into oral spray delivery of vitamins suggests that buccal absorption can be an effective route for nutrients like B12, particularly in individuals with compromised gastrointestinal absorption. Studies have shown that cyanocobalamin delivered via oral spray can raise serum B12 levels in deficient individuals, though those with severe malabsorption may still require injections. Always discuss your specific situation with a healthcare professional for personalised advice.

How Should You Use BetterYou Boost B12 Oral Spray?

Using this spray correctly ensures you get the most from each dose. The technique is straightforward, but it does differ from taking a tablet — so it's worth taking a moment to get it right.

Follow these steps each time you use the spray:

What Is the Correct Dose of BetterYou Boost B12 Oral Spray?

The dose recommended on the product label is designed to provide a meaningful contribution to your daily B12 intake without exceeding safe levels. Always follow the label instructions and do not adjust your dose without speaking to a healthcare professional first.

When Is the Best Time to Use BetterYou Boost B12 Oral Spray?

There is no clinically mandated time of day for taking B12, but consistency matters more than timing. Many people find it easiest to use the spray as part of their morning routine — perhaps alongside breakfast or when brushing their teeth — so it becomes a habit rather than an afterthought.

If you find that taking it on an empty stomach causes any mild nausea, try using it with or just after a meal. The absorption route via the oral mucosa means food in the stomach does not significantly affect how the vitamin is taken up.

How Long Can You Use BetterYou Boost B12 Oral Spray For?

For most people — particularly vegans, vegetarians, and older adults — ongoing daily supplementation is appropriate because the underlying dietary or absorption limitation does not resolve on its own. Vitamin B12 is water-soluble, so excess is excreted rather than stored to harmful levels, making long-term use at recommended doses safe for healthy adults.

If you are taking this spray because a GP identified low B12 levels, it is worth having your levels rechecked periodically to ensure the supplement is meeting your needs. Some people with significant absorption problems may eventually require prescription treatment. Review your supplement routine with your pharmacist or GP at least once a year.

Do not exceed the recommended dose. If in doubt, speak to your pharmacist.

Customer Reviews

Be the first to write a review
0%
(0)
0%
(0)
0%
(0)
0%
(0)
0%
(0)

What Are the Most Common Side Effects of BetterYou Boost B12 Oral Spray?

Vitamin B12 supplements are among the most well-tolerated nutritional products available. Because B12 is water-soluble, your body excretes what it does not need, which significantly reduces the risk of accumulation or toxicity. That said, a small number of people do experience mild effects, particularly when first starting supplementation.

  • Mild nausea, especially if taken on an empty stomach
  • Headache
  • Loose stools or mild diarrhoea
  • A slightly unusual taste in the mouth after spraying

These effects are generally short-lived and tend to resolve on their own. Taking the spray with food can help reduce any stomach-related discomfort.

What Are the Less Common Side Effects of BetterYou Boost B12 Oral Spray?

Less frequently, some users report the following effects. These are not dangerous in most cases, but they are worth being aware of:

  • Skin flushing or redness, particularly on the face or neck
  • Mild itching or a skin rash
  • A tingling or numbing sensation in the mouth or lips
  • Feeling anxious, restless, or mildly agitated
  • Swollen or sore tongue (glossitis) — rare

If any of these persist beyond a few days or worsen over time, stop using the product and speak to your pharmacist or GP.

What Are the Serious Side Effects of BetterYou Boost B12 Oral Spray?

Serious adverse reactions to cyanocobalamin oral spray are rare, but they can occur. The most significant concern is an allergic reaction (hypersensitivity). Symptoms to watch for include:

  • Swelling of the face, lips, tongue, or throat
  • Difficulty breathing or swallowing
  • Severe skin rash, hives, or blistering
  • Dizziness or feeling faint
  • Rapid or irregular heartbeat

If you experience any of these symptoms, stop using the spray immediately and call 999 or go to your nearest A&E. Do not wait to see if symptoms improve on their own.

What Should You Do If You Experience Side Effects?

For mild side effects, try adjusting when you take the spray — for example, taking it with food rather than on an empty stomach. If symptoms are persistent or troublesome, stop use and consult your pharmacist. You can also report suspected side effects of food supplements to the Food Standards Agency (FSA) or speak to your GP if you are concerned about your reaction.

Never ignore a side effect that feels unusual or severe. Your pharmacist is a good first point of contact for advice on whether to continue, adjust, or stop supplementation.

Can BetterYou Boost B12 Oral Spray Interact With Other Medicines?

While cyanocobalamin oral spray has no known dangerous interactions with other medicines, certain drugs can reduce B12 absorption and therefore affect how well supplementation works. These include metformin, proton pump inhibitors (such as omeprazole), H2 receptor antagonists, colchicine, and some anticonvulsants. If you take any of these regularly, inform your pharmacist so they can advise on whether your current dose is sufficient. No dose adjustment of other medicines is typically required when starting B12 supplementation.

If you are concerned about any side effects, contact your pharmacist or GP immediately.

Patient Information Leaflet

Important - Before taking any medication, it is always important to read the Patient Information Leaflet (PIL)

Written and reviewed by our qualified team

GPhC Number: 2233073
Tarun Kumar

Reviewed by:

Tarun Kumar

Superintendent/ Clinical Lead

📖 Find out more about our team of medical content authors and how we ensure the accuracy of our content with our content guidelines.

Content last updated: 31 Mar 2025

We’re a safe and
regulated UK service

Registered Pharmacy Badge

Lowest Price Guarantee

We're convinced you won't find your treatment cheaper, but if you do we'll refund the difference.

Find out more

100% discreet packaging

We're convinced you won't find your treatment cheaper, but if you do we'll refund the difference.

Find out more

Agent

Need help?
Talk to our friendly experts now

How our service works

Service Setup

Service setup

Discreet Packaging

Discreet packaging

Express Delivery

Express delivery