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If your feet have started waking you up at night and your doctor keeps telling you it's just the diabetes — I need you to read this. Because I was sitting exactly where you are eighteen months ago. And I almost missed the window. My name is Carol. I'm 61. Diagnosed Type 2 five years ago with an A1C of 9.4. My doctor was kind about it. Sat me down, explained everything patiently. Metformin, dietary changes, come back every three months, we'll track the number together. So that's what I did. Every three months. Every lab draw. Every adjustment. 9.4. 8.8. 8.1. 7.6. 7.1. 6.9. "Carol, this is excellent progress. You should be proud of yourself." I was proud. I was doing everything right. But about ten months in, something started in my feet. Not dramatic. Not scary. Just a faint tingling at night when I was trying to fall asleep. Like the feeling when your foot falls asleep — except it hadn't. And it wouldn't stop. I mentioned it at my next appointment. "Completely expected with your glucose history," my doctor said. "As your A1C continues to come down, that should improve." Should. I held onto that word. Trusted it. My A1C kept coming down. The tingling didn't improve. It got worse. Tingling became a burning sensation across the balls of my feet. Started waking me up at 2, sometimes 3 in the morning. I'd sit on the edge of the bed in the dark, feet on the cold floor, waiting for it to pass. My husband would wake up and ask if I was okay. I'd say yes because I didn't want to scare him. I went back. Told my doctor the numbers were improving but the feet were not. She referred me to a neurologist. Peripheral neuropathy. The neurologist said it like he was reading from a list. I asked how. My A1C had dropped almost two and a half points. I was doing everything right. He looked at me the way I imagine he looks at everyone who asks that question. Not surprised. Not concerned. Just measured. "The nerve damage that occurred when your glucose was elevated doesn't reverse the moment your numbers improve," he said. "Those nerves were already compromised. Improving your A1C stops further damage — it doesn't undo what's been done." I drove home and sat in my car in the driveway for a long time. I thought about my mother. She was diabetic for nineteen years. A1C was always chasing a target it never quite reached — usually somewhere between 8 and 10. Year 3: feet started tingling. They told her it was part of the disease. Year 7: burning bad enough that she started keeping a frozen water bottle by her bed to put her feet on at night. Year 11: numbness in both feet. Started on medication for the pain. Year 15: fell in the kitchen. Couldn't feel the wet floor. Broke her wrist catching herself. Year 19: limited mobility. Lost partial sensation permanently. She uses a cane now and she's terrified of every curb, every uneven surface, every unfamiliar floor. She's 79 years old and she is afraid of her own feet. I sat in that driveway and I said to myself: I am not going to be my mother. So I went inside and I started reading everything I could find. Not the pamphlets. Not the patient education handouts. The actual research. Clinical studies. Drug monographs. Neurology journals. I needed to understand what was actually happening inside my body. And I found something that made me genuinely angry. Two things are destroying your nerves when you have elevated blood sugar. The first one they tell you about. High glucose damages the tiny capillaries that supply blood to your nerves. The nerve starts to starve. First it misfires — that's the tingling, the burning, the electric sensations. Then it goes quiet. That's the numbness. Then it's gone. The second one nobody told me. Metformin depletes B12. It's right there in the prescribing information. Has been documented for years. "Long-term use may result in vitamin B12 deficiency." I read that sentence three times. B12 is what produces and maintains the myelin sheath — the protective coating wrapped around every nerve fiber in your body. Picture a lamp cord. The wire inside is the nerve. The rubber coating around it is myelin. High blood sugar is cutting off the blood supply to the cord from the outside. Metformin is stripping the rubber coating off from the inside. Both. Simultaneously. For years. And in four and a half years on Metformin — four and a half years of quarterly appointments — not one person had mentioned this to me once. I called my neurologist. I said: did you know Metformin depletes B12? Did you know B12 is what maintains the myelin around peripheral nerves? He said yes. It's a known interaction. I said: then why was I never tested? Why was I never told to supplement from day one? He said: "B12 is something we monitor in long-term Metformin patients." I said: in four and a half years, has anyone checked mine? Silence. I got my B12 tested that week. 203 pg/mL. Normal starts at 300. Optimal for nerve function is closer to 500. I had been severely deficient. For who knows how long. And not one person in four and a half years had looked. I went straight to the pharmacy and bought the best B12 supplement I could find. Took it every single morning for eight weeks. Got retested. Three points. In eight weeks. I stood in the parking lot of the lab looking at that number and felt something close to despair. Because I had done everything right again. And again it wasn't working. That's when I started digging into why. After 50, your stomach acid production drops by about 40%. B12 requires stomach acid to be absorbed. If you're taking oral B12 supplements and you're over 50 — especially if you're also taking Metformin, which further reduces acid-dependent absorption — those pills are likely being destroyed before they ever reach your bloodstream. I had been swallowing supplements every morning and absorbing almost none of it. The answer is sublingual delivery. Under the tongue. The tissue there connects directly to the bloodstream — no stomach, no acid, no breakdown. The B12 goes straight in. But not just any B12. Methylcobalamin. The active neurological form your body can actually use directly. Most supplements use cyanocobalamin — cheaper to manufacture, but your liver has to convert it before it's usable. After 50, that conversion becomes increasingly inefficient. You absorb some and still end up with very little where you need it. And here's what I didn't understand at first: B12 alone isn't enough. The B vitamins work together as a system. B1 — thiamine — is fuel for nerve cells. Diabetics are almost universally depleted. B6 — pyridoxine — directly reduces the ectopic nerve firing that causes burning and electric shock sensations. B3 — niacin — dilates the tiny peripheral capillaries. More blood flow to the very vessels that diabetes has been constricting. B9 — folate — essential cofactor for myelin synthesis. Helps actually rebuild the insulation. All of it sublingual. All in the bioavailable forms an older body can actually use. I spent weeks researching formulations. Most were wrong in one or more ways — oral instead of sublingual, cyanocobalamin instead of methylcobalamin, incomplete complex, underdosed. Then I found a thread in a forum for women with Type 2 diabetes. Not a review site. An actual community where people were posting updates over months. Real names, real timelines, real lab results being shared. Multiple women kept coming back to the same product. Nuvel. Sublingual liquid. 5,000mcg methylcobalamin. Full B-complex. Third-party tested. Made specifically for diabetic neuropathy support. I read every post in that thread. Then I ordered it. More than I'd spent on any supplement before. But I was past caring about the price. Week 2: slept through the night. Both nights that week. The 3am burning that had been waking me up for almost a year — didn't happen. I woke up and lay there confused for a moment before I realized what was different. Week 4: the constant background hum during the day got quieter. Not gone. But like someone had turned a dial down two notches. I noticed it because for the first time in months I got through an entire afternoon without thinking about my feet. Week 6: I was standing in my kitchen making dinner and I noticed something. The kitchen mat under my feet — the one with the anti-fatigue foam — I could feel it. The give of it. The texture. I stood there for probably a full minute just pressing my feet into it. I didn't say anything to my husband. I just stood there. Week 9: walked to the end of our street and back. A quarter mile, maybe. Came back in and sat at the kitchen table and started crying and I couldn't completely explain to my husband why. He understood anyway. Week 12: nerve conduction retest. Previous: 28 meters per second. Severely abnormal. Normal is 45–50. New: 36 meters per second. The technician ran it twice. "This shows meaningful improvement. That's not typical in cases like yours." My neurologist wrote in my chart: "Patient reports significant reduction in neuropathic symptoms. Nerve conduction velocity shows measurable improvement. Continue current protocol." That was fourteen months ago. My A1C today is 6.7. Still working. Not perfect. But I sleep through the night. I walk without thinking about my feet. I can feel the floor. The burning that used to wake me up every night is maybe 15% of what it was. And I finally understand what was happening to me. Blood sugar was starving my nerves of their blood supply. Metformin was depleting the one nutrient my nerves needed to protect and repair themselves. Both happening at the same time. For years. While every single appointment we talked about one number and called everything else "expected." It wasn't expected. It was two separate problems being treated as one. And the second one wasn't being treated at all. If you're reading this and you've had elevated blood sugar — if you've been on Metformin for more than a year — please get your B12 tested. Ask for it directly. Don't wait for someone to offer it. I would bet everything that it's low and nobody has checked. And if your feet have already started — any tingling, any burning, any numbness, anything that wakes you up — please understand something: Nerves regenerate. But only while there's still enough living fiber to rebuild from. Once the nerve fiber is completely gone, nothing brings it back. My neurologist told me that. I caught mine while there was still something left to save. My mother didn't know to look. Nobody told her. She's been managing the consequences for years now and she is careful and brave about it and it breaks my heart every time I watch her hesitate at a curb. She was never given a chance to get ahead of it. You might still have that chance. Don't wait for the next appointment. Don't wait until it's waking you up every night. Don't wait until you're where my mother is. Take the Metformin — it's doing important work on your blood sugar. And take Nuvel alongside it every morning — to replace what the Metformin has been quietly taking from your nerves. Two problems. Addressed together. That's what finally worked. I wish someone had handed me this information the day I was diagnosed. Instead I found it almost too late to matter. You still might be in the place where it matters a great deal. 👉 Check if Nuvel is in stock: https://trynuvel.com/pages/nerve-repair P.S. — A few things before you go: 90-day money-back guarantee. If you're not seeing real improvement in your symptoms after 12 weeks, every dollar comes back to you. No questions, no hoops. They're running a discount right now — that's how I was able to order three months at once. It's a smaller company and it gets passed around fast in the diabetes communities. I've watched it go out of stock. Don't sit on this. If your A1C has been elevated and you're on Metformin — especially if any symptoms have already started — please just try it. I went from burning feet and 3am wake-ups and nerve conduction of 28 m/s to sleeping through the night and 36 m/s in 12 weeks. My mother keeps a frozen water bottle by her bed every single night. I sleep straight through until morning. You know now. That's more than either of us had. 👉 https://trynuvel.com/pages/nerve-repair