For people with low energy, brain fog, or B12 absorption issues, especially those on metformin, reflux medication, or other medications that deplete B12, vitamin B12 is delivered through the skin, not the digestive system.
Patched Up Smart Vitamin B12 Patches deliver 1200 mcg of methylcobalamin, the activated form of B12 your body uses directly, through the skin rather than pills. They are designed for people experiencing fatigue, brain fog, or nerve symptoms; those on medications that deplete B12; people with gut absorption issues; and anyone whose body struggles to absorb oral B12.
Smart Vitamin B12 Patches offer a simple and effective way to support energy, focus, mental clarity, and more consistent sleep, all without pills.
- ✅ Contains 1200 mcg methylcobalamin (activated B12)
- ✅ Plus 400 mcg folic acid (B9)
- ✅ May help regulate melatonin for better sleep rhythms
- ✅ Waterproof, vegan, gentle adhesive
- ✅ 8 patches per pack
- ✅ Apply 2 to 4 times per week for 24 to 48 hours each
Why methylcobalamin?
Unlike synthetic cyanocobalamin, methylcobalamin is the active form of B12. Your body can use it immediately, with no conversion step required. It may support:
- Energy metabolism
- Red blood cell formation
- Cognitive function and mental clarity
- DNA synthesis
- Nervous system health
- Melatonin rhythm support for improved sleep timing
For more on why methylcobalamin is the form to look for, read our blog on methylcobalamin.
B12 and Sleep
Vitamin B12 plays a role in the body's own production of melatonin, the hormone that signals sleep. Methylcobalamin specifically acts as a methyl-group donor in the pathway that converts serotonin into melatonin, both in the brain and in the gut. Without enough active B12, the body may struggle to complete this final step. Many people with low B12 also report disrupted sleep, including difficulty falling asleep, waking in the early hours, or feeling unrested even after a full night. The B12 patch supports this pathway by delivering methylcobalamin in the form the body uses directly.
Who might benefit?
Many people have trouble absorbing B12 orally due to:
- Low stomach acid
- Gut issues such as IBS, coeliac disease, or Crohn's
- Certain medications, such as metformin, reflux medication, or weight-loss medications including Ozempic
- Autoimmune conditions affecting B12 uptake, such as pernicious anaemia
- Age-related absorption decline
- A vegetarian or vegan diet, since B12 comes almost entirely from animal foods
Transdermal patches bypass the digestive system, delivering B12 directly into the bloodstream.
🧒 Safe for Kids?
Yes, Smart B12 Patches may be suitable for children, especially those who need support with energy, attention, or low B12 levels.
| Age Group |
Guidance |
| 4 to 8 years |
Cut the patch in half or limit wear time to 12 to 24 hours |
| 9 to 13 years |
One full patch may be suitable |
| Teens |
One full patch is generally appropriate if needed |
Continuously monitor for skin sensitivity and consult a healthcare provider if unsure.
How to use
- Apply one patch to clean, dry, hair-free skin
- Wear for 24 to 48 hours
- Use 2 to 4 times per week
📦 Each pack includes
- 8 patches (2 x 2 cm, brown colour)
- Waterproof, gentle adhesive, well tolerated, with reactions rarely reported on this patch
Note: any pink or red mark left behind on the skin is simply remaining methylcobalamin, a deep red nutrient that has not fully absorbed. It is harmless and washes off easily.
🧪 Ingredients (Per Patch)
- Methylcobalamin (Vitamin B12), 1200 mcg
- Folic Acid (Vitamin B9), 400 mcg
Frequently Asked Questions
Why methylcobalamin instead of cyanocobalamin?
Most cheap B12 supplements use cyanocobalamin, a synthetic form that your body has to process and convert into methylcobalamin before it can be used. Methylcobalamin is already in the active form, so the body can use it immediately. It is the form your cells work with at the end of that process anyway.
How is the patch different from taking a B12 tablet or a sublingual B12 tablet?
Oral B12 tablets have to pass through stomach acid and then bind to intrinsic factor in the gut to be absorbed. Many of the people who need B12 most, those on metformin or reflux medication, those with autoimmune conditions, or those with gut issues, have impaired absorption at one or more of these steps, which is why oral B12 often does not work for them. Sublingual lozenges are slightly better but still rely on absorption through the mouth and digestive tract. Transdermal patches bypass the entire digestive system and deliver methylcobalamin directly into the bloodstream through the skin.
I am on metformin, Ozempic, or a reflux medication. Could the patch help me?
Possibly, yes. Metformin (a common diabetes medication), proton-pump inhibitors (reflux medications such as omeprazole), and GLP-1 weight-loss medications including Ozempic, Wegovy, and Mounjaro are all known to reduce B12 absorption over time. Symptoms of B12 depletion include fatigue, brain fog, tingling in fingers or toes, and nerve pain. The patch bypasses the absorption pathway that these medications affect, so B12 reaches the bloodstream regardless. For more on why this matters, read our blog Why Vitamin B12 Deserves a Weekly Top-Up.
Why does the B12 patch use folic acid rather than methylfolate?
At the time of formulation, methylfolate was not available in transdermal patch form globally. Folic acid is what is available in this product, and at 400 mcg alongside 1200 mcg of methylcobalamin, it sits comfortably within normal daily intake with plenty of B12 to work alongside it. If you are after methylated folate, our Smart B-Complex Patches contain methylfolate alongside methylcobalamin and other activated B vitamins. The B12 patch is built around methylcobalamin, with folic acid as a complementary inclusion rather than the main story.
How often should I use Smart B12 Patches?
Apply one patch to clean, dry, hair-free skin and wear for 24 to 48 hours. Most people use them 2 to 4 times per week, depending on their B12 levels and how much support they need. If you are on a B12-depleting medication or have an absorption issue, more regular use may be appropriate. If you are maintaining healthy levels, less frequent use is fine. There is no fixed schedule. Find what works for you and adjust.
Why is there sometimes a pink or red mark on my skin after removing the patch?
That is the methylcobalamin itself. Methylcobalamin is naturally a deep red colour, part of what gives the cobalamin family of B12 vitamins their characteristic colour. The pink mark you see is simply remaining methylcobalamin that has not fully absorbed. It is completely harmless and washes off easily with soap and water. It is not a skin reaction.
Should I get my B12 levels tested?
If you are experiencing symptoms like persistent fatigue, brain fog, or tingling in fingers or toes, yes. A simple blood test can confirm whether B12 levels are low. Many doctors do not routinely check B12 unless prompted, especially if you are on medications known to deplete it. Asking specifically for a B12 test, ideally with active B12 (holotranscobalamin) measured rather than just total B12, gives the clearest picture.
Related Reading
For more on the science behind B12 and why methylcobalamin matters:
Disclaimer: These patches are intended for general well-being purposes only and are not intended to diagnose, treat, cure, or prevent any disease. Consult a healthcare professional before use if you have any concerns.
