Can B12 shots make you sick? For almost everyone, no. Our nurses push B12 at kitchen tables across Tulsa most days of the week and the usual report back is nothing at all. The official label for injectable B12 does list a few reactions, and they are uncommon ones. Nausea is not among them anywhere.
We list our sources at the bottom so you can check us.
When somebody says sick they usually mean queasy. MedlinePlus, the patient encyclopedia run by the National Library of Medicine, keeps the definition that simple: Nausea is feeling an urge to vomit. Hold that next to the list of reactions on the label for injectable B12 and see what's missing. Loose stools, yes. Itching, yes. Vomiting and nausea, neither one.
So when a client tells us they went queasy an hour after a shot, we go looking elsewhere, and the same MedlinePlus page keeps the list we look at: Common problems that may cause nausea and vomiting include: and under it sit a stomach bug, food poisoning, reflux, migraine, motion sickness. A shot that takes four seconds rarely beats last night's chicken salad for a suspect.
Two documents matter here. Neither one is ours. MedlinePlus keeps the patient sheet, and it opens its side effect section without any drama at all: Cyanocobalamin injection may cause side effects. Two items follow. Diarrhea is the first. The second one is strange, and both pages word it strangely. DailyMed, the National Library of Medicine's shelf of prescribing labels, files it under Miscellaneous: Feeling of swelling of entire body. Not swelling. The feeling of it. Uncommon, and it passes. One thing here doesn't line up, and we'd rather tell you than let you find it. Both of those pages are written for cyanocobalamin. That's the form the official label covers in this country. The B12 in our bags and in the $25 injection your nurse can add is methylcobalamin, a different form of the same vitamin, printed that way on our menu. So read that label as the best official answer anyone has about B12 shots in general. It isn't the ingredient list for our syringe.
Same vitamin. Different wrapper.
There's one serious warning on that label. One sentence. We're not going to skip it. The label puts it this way: Anaphylactic shock and death have been reported after parenteral Vitamin B12 administration. Parenteral means by needle instead of by mouth. Rare, and reported. That's why it sits in the warnings instead of getting buried.
The same label names who that risk belongs to, plainly: Sensitivity to cobalt and/or Vitamin B12 is a contraindication. Cobalt, because the B12 molecule is built around a single cobalt atom. That's why a physician reviews every infusion and every injection before a registered nurse runs it. It's also why the questions at your kitchen table are dull ones. Your medication list. Your allergies. What happened the last time somebody put a needle in your arm. If those answers point the wrong direction, you get a no from us and not a booking link. Your nurse stays with you the whole visit. No pharmacy counter does that.
Simply Hydrate is the plainest way to get one. $99, all in, a full bag of fluids with nothing else in it, and injections of B12, Zofran or vitamin D go on top at $25 each. First visit, the B12 is free. If you'd rather have it run in the bag than pushed, Energy and Hydrate carries methylcobalamin in the bag itself alongside B-complex, vitamin C and taurine. The full IV menu prints every ingredient for every bag at one flat price, no surprise fees.
Your nurse comes to a house, an office or a hotel room, often that same day. The service list runs Owasso, Collinsville, Claremore, Broken Arrow, Bixby, Jenks and Tulsa itself. If a shot once left you flat rather than queasy, tiredness after B12 is its own question.
Reading, not medical advice. What is above sits on the three government pages listed below, plus our own printed menu, and not one of them has ever seen your chart. An allergy history, a pregnancy, trouble with your kidneys, a shelf of prescriptions: all of that goes to the clinician who has. Emergencies go to 911 and not to a nurse you found on the internet.
MedlinePlus: Cyanocobalamin Injection, a government health agency's patient drug sheet listing what a B12 injection can and cannot do to you.
DailyMed: Cyanocobalamin Injection, USP label, the primary prescribing label for injectable B12, published by the National Library of Medicine, a government health agency.
MedlinePlus: Nausea and vomiting, adults, a government health agency page on what nausea is and what commonly causes it.
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