$20 Gift Card
Supports Healthy Nerve Function
5,000 mcg Methyl B12
For Metformin & Acid-Reducer Users
5X Better Absorption
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Most drugstore B12 is cyanocobalamin at 1,000 mcg, which is too little to get past the blocks that metformin, acid reducers and gut bacteria put in the way. Renervia uses methylcobalamin, the methylated, active form of B12, at 5,000 mcg. That dose is where its bioavailability edge comes from: a small share of any B12 dose gets through by a second route, so five times the dose means far more B12 reaches you every day. Unlike capsule complexes, there's also no flushing niacin and no B6 overload, just 3.4 mg, below the safety limit
Everyone is different. B12 usually drains slowly over months or years, so it takes time to build back up. Some people notice more energy within the first couple of weeks, while nerve comfort tends to take longer. We recommend taking it daily for at least 90 days.
Shake the bottle, fill the dropper one and a half times (1.5 ml) and release it under your tongue. Hold it there for 60 to 90 seconds, then swallow. Take it once a day. Many people keep it next to their morning pill so they never forget.
Five B vitamins, led by a full 5,000 mcg of B12:
- Methylcobalamin, B12 (5,000 mcg): the active form of B12. The dose is large on purpose. A small share of any B12 dose gets through even when metformin, acid reducers or gut bacteria block the usual route, so a bigger dose means more reaches you.
- Thiamine mononitrate, B1 (2.4 mg): helps your body turn food into energy and supports normal nerve function.
- Niacinamide, B3 (16 mg): the form of B3 that doesn't cause the red, hot, itchy flush that niacin does.
- Pyridoxine HCl, B6 (3.4 mg): kept low on purpose, below Europe's 12 mg daily upper limit for adults, because too much B6 over time is linked to tingling feet.
- Folate (400 mcg DFE, as 240 mcg folic acid): works alongside B12 in normal nerve and cell function.
Other ingredients: organic glycerin, monk fruit, natural raspberry flavour, [purified water: confirm against your label].
Vegan · Non-GMO · Free of wheat, gluten, dairy, corn, soy, eggs and parabens
30-Day Money-Back Guarantee. If you're not satisfied for any reason, contact us for a full refund — no questions asked. T&Cs apply.
Why 25,000+ Customers
Trust ReNervia™
Methylated B Vitamins
Third Party Tested
GMO Free
Superior Bioavailability
100% Natural
30-Day Guarantee
Clean, High-Quality Formula
Why does Renervia work when regular B12 doesn't?
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Enough Gets Through
B12 from food needs stomach acid, a carrier protein called intrinsic factor, and one receptor in your small intestine. Metformin interferes with that receptor, acid reducers lower the acid, and gut bacteria can grab B12 first. A small share of any B12 dose crosses the gut wall without that route. At 5,000 mcg a day, that share keeps your levels topping up.
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Clinical Safe B6
Low, Safe B6 Many "nerve" B-complexes carry up to 100 mg of B6. Too much B6 over time is linked to tingling and numb feet, the same symptoms people take them for. Europe cut its adult upper limit to 12 mg in 2023, and Australia had logged 250 B6 nerve reports by October 2025. Renervia keeps B6 at 3.4 mg.
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Liposomal Delivery
Most B vitamins come as bare powder or plain liquid, and your gut has to do all the work. Renervia wraps its vitamins in liposomes, tiny bubbles made from the same kind of fats as your cell walls, which help protect them on the way in and carry them into cells. The B12 inside is methylcobalamin, the methylated, active form, at a full 5,000 mcg.
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No Horse Pills
B-complex capsules are often huge, and some buyers describe choking on them. Unflavoured liquid B12 tends to taste bitter, like cough syrup. Renervia is a raspberry drop sweetened with monk fruit. One and a half droppers under your tongue each morning, with nothing to swallow and nothing to dread.
Millions Are Running Low. Most Don't Know It.
Nearly 20 million Americans take metformin, and US doctors wrote over 45 million omeprazole prescriptions in 2023. Both drugs can slowly lower B12 over years of daily use, and the warning sits on a leaflet few people read.
Try Risk-Free Today
Most B-complex brands are cutting corners. We're not.
Most B-complexes on shelves pack in around 100 mg of niacin that sets your skin on fire, and up to 100 mg of B6, eight times the adult safety limit. Most plain B12 sticks to 1,000 mcg tablets, a dose that struggles when your medication is blocking the main way in.
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★★★★★Helped more than I expected
Been on metformin for over 5 years. Started getting that burning, pins-and-needles feeling in my feet about 18 months ago. Doctor finally checked my B12 and it was low. She recommended a good B-complex with methylcobalamin.
I’ve been taking this one from Renervia for about 10 weeks now. The constant burning has calmed down a lot, it’s not completely gone, but it’s way more manageable and doesn’t keep me up at night anymore. I also feel less tired during the day.
Not a magic fix, but it’s made a noticeable difference. Glad I tried it.
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★★★★★Wish I started this sooner
Metformin has been great for my blood sugar, but the side effect of low B12 snuck up on me. My feet felt like they were on fire most evenings. After confirming the deficiency, I switched to a methylated B-complex (this one has methyl B12, B6, and a solid dose of B1). After about a month I started noticing the burning wasn’t as intense. By week 8 it was significantly better. Energy is up too. Easy to take, no stomach issues. If you’re on long-term metformin and dealing with burning or tingling feet, get your levels checked and consider a quality B-complex. This one worked well for me.
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★★★★★Noticeable help with diabetic nerve pain
I’ve had type 2 diabetes for 12 years and developed peripheral neuropathy in both feet about 3 years ago. Burning, tingling, and that “walking on sandpaper” feeling were constant, especially at night.
My doctor suggested trying a high-quality B-complex along with my other treatments. I’ve been taking this one for about 3 months. The burning has decreased quite a bit, it’s still there some days, but nowhere near as intense. Sleep is better because my feet aren’t waking me up as often.
Not a cure, and I still have some numbness, but it’s been getting progressively better. Easy to take and no side effects for me.
Proven Benefits. Backed by Science.
Your body deserves more than empty claims. Renervia® supports your nerves, energy and focus with a full 5,000 mcg of methyl B12 and the B vitamins that work alongside it.
Hands & Feet Comfort
Supports healthy nerve function, day and night
B12 helps maintain myelin, the insulation around your nerves. The longest nerves, the ones running down to your feet, tend to feel a shortfall first.
Steady Daily Energy
Supports normal energy metabolism
Your body uses B12, B1, B3 and B6 to turn food into usable energy. When B12 runs low, tiredness is often the first thing people notice.
Clearer Thinking
Supports focus and mental clarity
B12 supports normal brain and nervous system function. Low levels often show up as the brain fog people live with for years before anyone checks.
Kind to Your Nerves
Full-strength B12 without the B6 overload
Too much B6 over time is linked to tingling and numb feet. We kept B6 at 3.4 mg and used non-flushing niacinamide, so nothing works against you.
Your Wellness Journey with Renervia™
B12 drains slowly, so it refills steadily. Here's what many people notice once they take it every day, right alongside their usual medication.
- One dropper next to your morning pill becomes a habit
- No flushing, no bitter aftertaste, no pills to choke down
- Some people notice a little more energy in the afternoon
- Afternoons feel steadier, with less need for a nap or extra coffee
- Your head feels a little clearer in the mornings
- Feet may start to feel calmer by the end of the day
- Nights get quieter, with less tingling and burning keeping you up
- Energy holds through the day without leaning on caffeine
- The fog lifts and you start to feel like yourself again
- Sleeping through the night feels normal again
- Steady on your feet for walks, errands and time with the grandkids
- You notice the difference most on the days you forget a dose
30-day money-back guarantee
Renervia™ is Different From Everything You've Tried
ReNervia vs. Other Brands
ReNervia™
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5,000mcg B12
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Methylated Form
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Liposomal Absorption
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3rd-Party Tested
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30 Day Guarantee
Other Brands
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Often 1,000mcg B12
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Cyano/Cheap Form
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Dry Powder Capsules
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No Transparent Testing
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No Guarantee
ReNervia vs. Other Brands
- Up to 5x Better Absorption
- Noticeable Results in Weeks
- Long-Term Wellness Support
- Clean, High-Quality Formula
verified_user30-day money back guarantee
30-Day Risk-Free Trial
We're so confident in ReNervia™ that we back every bottle with a full 30-day satisfaction guarantee. If you don't notice a difference in how you feel, we'll refund every penny — no hassle. We built this product for people who've already been let down enough
Questions? We’ve Got You Covered
Why drops instead of a pill?
Plenty of people struggle with large B-complex capsules and stop taking them. Studies show high-dose B12 by mouth works as well as under the tongue, so the dose matters more than the route. Drops are simply the easiest way to take 5,000 mcg every day, and they taste like raspberry.
Can I take it with acid reducers like omeprazole?
Renervia was formulated with acid-reducer users in mind. Your stomach needs acid to free B12 from food, but the B12 in Renervia is already free, so it doesn't need acid to be released. Check with your doctor or pharmacist before starting any supplement.
Can I take it if I have diabetes?
Renervia was made for adults taking metformin, and it's sweetened with monk fruit. It doesn't lower blood sugar and isn't a diabetes treatment. It's designed to help maintain healthy B12 levels while you keep taking your prescription. Talk to your doctor before you start.
How is Renervia different from B12 shots?
Shots cost around $40 each and mean regular clinic visits or injecting yourself. Studies show high-dose B12 by mouth can correct low levels too. Renervia gives you 5,000 mcg a day for about $1, with no needles. If your doctor put you on shots for a specific reason, talk to them before switching.
How is Renervia different from the Amazon listings?
Most B-complexes on Amazon are large capsules with flushing niacin and B6 levels up to 100 mg. Liquid B12 options are often unflavoured and bitter. Renervia combines a full 5,000 mcg B12 dose with low B6, no-flush niacinamide and a raspberry taste you won't dread.
Is it vegan and allergen free?
Yes. Renervia is vegan and non-GMO, and free of wheat, gluten, dairy, corn, soy, eggs and parabens. It contains no artificial flavours, sweeteners or preservatives.