Reader Story

Vitamin B12 for Neuropathy: Bev Got Her Level From 210 to 690 in a Year. Her Feet Still Burned at Night. Here's the Part B12 Doesn't Reach

Who vitamin B12 really helps, the blood test that tells you if you're one of them, and why Bev's lab report said "normal" while her soles kept burning through the sheets.

By the HealthVital editorial team · 8 min read

Bev, 67, carried mail in Erie, Pennsylvania for thirty-one years. Lake-effect snow, August humidity, the same 600 doorsteps. She retired with good knees and a joke about being the only carrier in town who never got bitten. Two years ago her feet started burning at night, mostly the balls of both feet, like she'd walked the route barefoot on hot asphalt.

Her doctor ran bloodwork. Her B12 came back at 210, low for someone who'd taken metformin for nine years. She typed vitamin B12 for neuropathy into her phone that same evening, ordered the big bottle, and took it every single morning for fourteen months. Her next lab report said 690. Her doctor called it "a beautiful number." Bev hung up and put her feet on the cold bathroom tile, the only thing that helped her fall asleep.

Vitamin B12 for neuropathy: who it actually helps

B12 is one of the raw materials your body uses to build and maintain the protective coating around your nerves. When you run low for a long time, that coating suffers, and the longest nerves, the ones going to your toes, feel it first. So B12 really matters, and for the right person it can make a real difference.

The right person is someone who is actually low. You're more likely to be low if:

• You've taken metformin for years. It's one of the most common reasons in people with type 2 diabetes.
• You take heartburn pills (the "-prazole" kind or the older acid blockers) every day.
• You're over 60. The stomach makes less of what you need to absorb B12 from food.
• You eat little or no meat, eggs or dairy, or you've had stomach or weight-loss surgery.

The test to ask for is a B12 level, and if it comes back in the gray zone, a methylmalonic acid (MMA) test, which can show a shortage the B12 number misses. If you're truly low, your doctor will tell you how much to take and in what form. Some people need shots. Don't guess at it on your own.

Why a fixed B12 number doesn't always mean quiet feet

B12 can work, but here's what nobody told Bev: getting the level back to normal stops the shortage. It doesn't, all by itself, undo the damage the shortage left behind. And in most people over 60 with burning feet, B12 isn't the only thing that's been wearing on the nerve.

Picture the nerve to your toes as a long wire with a coating around it. B12 is one of the building blocks for that coating. But if the wire has also been sitting in years of slightly high blood sugar, if the tissue around it stays a little inflamed, and if not enough blood makes the long trip down to the feet, then adding more bricks doesn't help much when the crew can't get to the job site. The coating keeps thinning, and you keep feeling the leak as burning, tingling, or numbness.

That's also why taking extra B12 when your level is already normal usually doesn't add anything, and why very high doses of a different B vitamin, B6, can actually cause nerve symptoms. More isn't automatically better.

There's a doctor with nearly three decades in practice who talks about exactly that coating, and about the part of the problem he says the usual vitamins don't touch. He's very specific about one simple morning habit, built around something that's been in kitchens for centuries and costs a few dollars: which kind, what it's taken with, and at what time. He says the version most people have at home isn't the one he means. We'll leave that part to him.

The cousin at the church rummage sale

Bev told the whole story to her cousin Lorraine, 71, over a folding table of donated lamps at the St. Luke's fall rummage sale. Lorraine laughed, not unkindly. "B12, the cream with the mint, the foot bath with the salts, the socks from the TV ad," she said. "I did all of it. None of it was wrong. It just wasn't reaching the part that was wearing out."

The next Sunday Lorraine came to dinner with a bottle in her purse and set it next to the pot roast. It was NervoLyn. Bev read the back the way she used to read a smudged address, slowly and with her glasses pushed up:

• Turmeric extract, standardized to 95% curcuminoids. For the body's normal inflammation response around stressed nerves.
• Alpha lipoic acid. An antioxidant the company describes as one of the most studied for the nerves in the feet and hands.
• Butcher's broom. A traditional herb for circulation, so blood can make the long trip down to the toes.
• L-carnitine and Coenzyme Q10. Fuel for the cells, so tired nerves have energy for their own slow repair.
• Magnesium glycinate. A gentle form of magnesium the company ties to calmer nerve signals and better sleep.

"So it's the crew," Bev said, "not more bricks." She kept her B12, because her doctor still wanted her on it, and showed him the label at her next visit. He told her to take it with breakfast and keep checking her feet every night.

What Bev noticed, and when

• Week 1. Nothing. Bathroom tile at 11 p.m., same as always.
• Weeks 2 and 3. A few nights where the burning started later than usual. She wasn't sure it meant anything. Lorraine said she'd noticed the same early on.
• Month 1. She fell asleep in bed, under the sheet, without going to the tile first. Twice in one week.
• Months 2 and 3. Where Lorraine is, and where Bev is headed: walking the neighborhood loop in the evening again, the one she used to finish her route on.

Why does it take that long? Because nothing in the bottle numbs anything. A coating that wore thin over years gets rebuilt on the body's own schedule, and the longest nerves get their turn last. The company says many people notice early changes in three to four weeks and fuller results over eight to twelve.

Who it may suit, and who it doesn't

It may be worth a look if you're over 50, your symptoms started in the toes of both feet and crept up slowly, your doctor has checked your blood sugar, B12 and thyroid, and you're doing the basics but still feel the burning, tingling or numbness.

It isn't for you if your symptoms came on suddenly or on one side, if you have leg weakness, a drooping face, slurred speech, or a foot sore that won't heal. Those need a doctor today. If you take blood thinners, diabetes or blood pressure medicine, are in chemotherapy, or are pregnant or nursing, show your doctor the label first. Don't stop a B12 your doctor prescribed. A supplement doesn't replace a diagnosis.

The company offers 60 days with your money back if you're not satisfied, and it's a one-time order, nothing that renews on its own. "Fourteen months I gave the B12," Bev said. "Sixty days is nothing."

So, does vitamin B12 help neuropathy?

Yes, if you're low. Get a B12 level (and an MMA test if it's borderline), especially if you take metformin or heartburn pills or are over 60, and take what your doctor recommends. But if your number is back to normal and your feet still burn, tingle or go numb, B12 has done its job and something else is still wearing on the nerve. Keep checking your feet every night, and don't wait if anything comes on suddenly. Results from any supplement vary from person to person, and Bev's are her own.

P.S. Bev still keeps the bathroom tile in mind, she says, "like an old friend I don't visit anymore." If your lab report says normal and your feet say otherwise, see what Lorraine brought to Sunday dinner. And if you take metformin, read Carla's story about her eleven years on it next.

Individual results vary. Reader stories reflect personal experiences; names and some details changed for privacy. This is an advertisement and not a news article. Statements have not been evaluated by the FDA. This product is not intended to diagnose, treat, cure or prevent any disease.