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If your feet burn at night, your doctor says your bloodwork is "normal," and you've been on a common diabetes medication for more than two years... what I'm about to tell you is going to make you furious. I'm a nutritionist. I went to school for this. I studied vitamins, absorption, metabolic pathways – the whole thing. And I STILL almost missed it in my own father. Three things are happening right now that nobody is connecting for you: One – A medication you take every single day is quietly draining one of the most important vitamins your nerves need to survive. Two – The blood test your doctor runs to check for that vitamin is designed in a way that misses the deficiency until it's dangerously advanced. And three – Every supplement you've tried to fix it has been destroyed by your own stomach before it ever reached your bloodstream. Your nerves have been deteriorating. And the system that's supposed to catch it has been telling you you're fine the entire time. Let me tell you what happened with my dad. Because his story is probably your story. And it almost didn't have a good ending. My dad is 63. Type 2 diabetic. Been on Metformin for about seven years. His doctor put him on it, told him to watch his diet, and sent him on his way. And for a while, it worked. Blood sugar came down. A1C got stable. He felt great actually. Then about three years ago, his feet started tingling. Not a lot but just enough to notice when he took his shoes off at the end of the day. Little pins and needles in his toes. He figured he'd been on his feet too long. Maybe bad shoes or poor circulation. It didn't go away. Within six months, the tingling turned into numbness. He couldn't feel the bath mat under his feet anymore. He started stubbing his toes on furniture because he couldn't tell where his feet were in space. One morning he stepped on a piece of glass in the kitchen and didn't feel it until he saw the blood on the tile. Then the burning started. That deep, hot, relentless burning that gets 10x worse at night. He'd get into bed. Feet would be fine for ten minutes. Then it would hit – like someone held a lighter under his soles. He'd kick the blankets off. Walk to the bathroom and run cold water over his feet. Get back in bed. Twenty minutes later, same thing. My mom told me he was sleeping maybe three or four hours a night. Most nights less. He'd be on the couch at 2am with his feet propped up on a bag of frozen peas. That's where she'd find him in the morning. Still in his clothes and fully awake. The exhaustion changed him. My dad used to be sharp. He ran his own business for thirty years. Numbers, clients, deadlines – he handled all of it. Now he was forgetting appointments. Losing words mid-sentence. His eyes would go glassy during dinner and my mom would say his name three times before he'd blink and come back. He stopped driving at night because he didn't trust his balance getting out of the car in the dark. Stopped going to his buddy's poker game because he couldn't follow the hands. Stopped fixing things around the house – not because of the pain, but because he couldn't hold a screwdriver steady. His grip was going. So obviously he's going to doctors. His GP ran the standard bloodwork. Everything "in range." He said, "It's probably diabetic neuropathy. We see it with Type 2. We'll keep an eye on it." Keep an eye on it. While his feet burn every night and he can't sleep. They sent him to a neurologist. The neurologist ran a nerve test. Came back "inconclusive." The whole visit lasted twelve minutes. The neurologist said, "Try gabapentin. We'll check back in six months." He tried gabapentin. 300mg, three times a day. The burning went down. He could finally sleep. For about six weeks he thought they'd cracked it. Then he started to feel the side effects of the gabapentin. Things like dizziness, weight gain, severe anxiety, and memory issues. The brain fog was probably the worst for him. He couldn't find his keys. He'd walk into the garage and stand there with no idea why he came in. His balance actually got WORSE. He tripped on the front step and grabbed the railing just in time. My mom watched it happen. I could hear her voice shaking when she told me. He told his doctor the side effects were killing him. Doctor said, "That's normal. Give it time.” So basically the two choices for my dad were to either bear with the nerve pain or lose the ability to function like a normal person. He picked pain. Stopped the gabapentin. The burning came back within two days. Right back on the couch at 2am with frozen peas on his feet. Then he did what everyone does. He tried supplements. He tried a B-complex from Amazon. Some brand with nice reviews and a leaf on the label. Six weeks. Nothing. Tried magnesium because someone in a Facebook group said it helped their tingling. Didn't help his. Tried alpha-lipoic acid because he saw it mentioned on Reddit. Two months. No change. Cut sugar completely. Walked a mile every day. Compression socks. Epsom salt soaks before bed. The burning kept going. The numbness spread. The sleep got worse. And every single blood test still said "normal." He spent over a thousand dollars in two years on supplements and his pain was worse than the day he started. This is where it gets personal for me. Because I'm his daughter. I'm a nutritionist. And I should have figured this out YEARS before I did. I knew Metformin could drain your B12. I learned it in school. It's not a secret. It's not some fringe theory. Every textbook mentions it. But I made the same mistake his doctor did. I looked at his blood test. Saw 310. And thought – that's in range. He's fine. I was wrong. And what I'm about to explain is the reason I was wrong. It's the same reason YOUR doctor is probably wrong right now. And it's why millions of people on Metformin are losing feeling in their feet while everyone around them says their numbers look great. Here's what nobody explains to you. The B12 in your blood test is NOT the B12 your nerves are using. I need you to really hear that. Because it changes everything. That blood test your doctor runs? It measures how much B12 is floating around in your blood. But your nerves don't use the B12 in your blood. They use the B12 that gets inside the nerve cell itself. And those are two very different numbers. Think of it this way. Your blood is like a highway. B12 is riding in cars on that highway. The blood test counts how many cars are on the road. But your nerves are the houses those cars are supposed to be driving TO. You can have a full highway and empty houses. So plenty of B12 in the blood. Almost none getting inside the nerve cells where it actually does the work. That's exactly what was happening to my dad. His blood test said 310. "Normal." But his nerves were deprived. The B12 was in his blood. It just wasn't getting in. And here’s why B12 is VERY important. Your nerves need B12 to make something called myelin. You don't need to remember that word. Just think of it as the coating on your nerves. Like the rubber on an electrical wire. When B12 drops inside the cell, that coating starts to thin out. Then it starts to crack. Then it starts to go away completely. Without that coating, the nerve signal goes haywire. Which is what’s causing all the symptoms like the numbness, tingling, and burning sensations. But here's the part that really made me angry. Because it's not just that they missed it. It's that the medication he takes every single morning is the thing CAUSING it. Here's how B12 normally gets into your body. Simple version. You eat food with B12. Your stomach acid breaks it loose. Then your stomach grabs it and carries it to the end of your small intestine. That's where it passes through the wall and enters your blood. Every step has to work. Stomach acid breaks it free. The stomach grabs it. The gut wall lets it through. Metformin messes up that last step. It blocks the door in your gut where B12 is supposed to get through. Not completely. But enough. Studies even show long-term Metformin use can cut your B12 absorption by 10 to 30 percent. Nobody told my dad. Nobody said, "Hey – this pill you're going to take every day for the rest of your life? It's going to slowly drain the one vitamin your nerves need most. We should keep an eye on that." Nothing. No warning. No plan. No extra blood work. Just – "Take this. Watch your diet. See you in six months." Seven years of that. And here's the cruelest part. The part that makes me want to throw something. When my dad tried to fix it on his own – when he bought the B12 from the drugstore, the B-complex from Amazon, every bottle and capsule and gummy he could find – his own stomach destroyed most of it before it ever got to his nerves. Because every supplement you swallow goes through the same broken system. It hits your stomach acid. The acid has to break it apart. The stomach has to grab it. Then it has to pass through the same gut wall that Metformin is blocking. You're trying to push B12 through a door that your own medication is holding shut. My dad was basically trying to pour water through a clogged pipe. And there's one more thing that nobody told him. The TYPE of B12 matters just as much as how you take it. Most supplements – the ones at CVS, Walgreens, Costco, Amazon – use a cheap form called cyanocobalamin. It's easy to make. It's in almost every bottle you've ever picked up. But here's the problem. Your nerves can't use cyanocobalamin directly. Your body has to convert it first. It has to run it through a bunch of steps to turn it into the form your nerves actually need – which is called methylcobalamin. That conversion takes energy. It takes enzymes. It takes a whole system inside your cells that works less and less well as you age. So my dad was swallowing a form of B12 his stomach couldn't break apart. That his gut couldn't absorb. And that his cells couldn't convert into something useful. Three things going wrong at once. Stacked on top of each other. So I went back to the research. Not the blog posts. Not the FAQ pages. The actual studies. And I asked one question: Is there a way to get the RIGHT form of B12 into my dad's blood WITHOUT going through his stomach at all? Because if his stomach can't break it apart, and his gut can't absorb it, and his cells can't convert the cheap form – then swallowing anything is a dead end. Doesn't matter the brand. Doesn't matter the dose. Doesn't matter if you spend $15 or $150. If it goes through the stomach, it's fighting a battle it can't win. The answer was so simple I almost kicked myself. Sublingual. Under the tongue. You put it under your tongue. It dissolves. It passes right through the thin tissue there – straight into your bloodstream. Skips the stomach completely. Skips the gut. Skips the blocked door. Skips everything. This isn't new. Doctors have been using under-the-tongue delivery for decades. Heart patients take nitroglycerin this way. Certain pain meds work this way. It's not experimental. It's one of the fastest ways to get something into your blood. And when the B12 going under your tongue is methylcobalamin – the form your nerves actually use – there's no conversion step either. It hits your blood ready to go. Your nerves get exactly what they need without your body having to change it into something else first. Every single failure point that made my dad's supplements useless? Skipped. So once I understood that, I started looking for a sublingual methylcobalamin that actually had a real dose. Not a tiny amount tucked inside a multivitamin. I needed something strong enough to make up for years of depletion. I needed: Methylcobalamin. Real dose. In the active form. Sublingual. I found one that had everything. A company called Nuvel. Their B Essence Complex. 5,000mcg of methylcobalamin and sublingual. I brought it to my dad's house. Didn't give him the full speech. Because if I'd said "try another supplement" he would've shown me the door. Three years of bottles that did nothing. He was done with all of it. So I set it on his counter and said, "Put this under your tongue every morning. Don't swallow it. Let it dissolve. Just trust me." Week one. Nothing crazy. He told me around day five he felt "a little less cloudy." But he didn't trust it. I told him to keep going. Your nerves don't fix themselves overnight. Week two. He called me on a Tuesday. Not about his feet. About his sleep. He said he slept six hours straight. First time in months. Week three. The tingling in his toes started to change. He said it wasn't gone but a lot intense. Week six. He walked down the driveway to get the mail. Barefoot. On gravel. He told me he could FEEL the gravel under his feet. The feeling had been gone so long he forgot what it was like. Week eight. He went to poker night. First time in over a year. He stayed up past 10. He drove himself there and drove himself home. Here's what keeps me up at night. Over 20 million people in America take Metformin right now. Studies show up to 30 percent of long-term users end up low in B12. That's millions of people whose nerves are slowly falling apart while their blood tests say "normal." Most of them are doing exactly what my dad did. Buying B12 that their gut can't absorb. Taking gabapentin that gives them other symptoms to manage their feet. Seeing specialists who spend twelve minutes and say "we'll keep an eye on it." If you're on Metformin and you've got burning feet, tingling, numbness, brain fog, no energy, bad balance, weak grip, or any mix of these... Please stop thinking it's "just diabetes" or "just getting old." EDIT: A few people asked about the brand my dad uses, so: 90-day money-back guarantee. If your symptoms aren't better after 12 weeks, every dollar back. No questions asked. They're running a discount right now. That's how I got three bottles. It's a small company. I've seen it sell out before. Don't sit on this. And honestly – the worst that happens is you get your money back. The best that happens is you feel like yourself again. → https://trynuvel.com/pages/nerve-repair