--- title: "Vitamin B12 Injection, Prescribed Online | Vitals Vault" description: "Methylcobalamin B12 given by injection, which bypasses absorption problems in the gut entirely. Useful where diet, age, metformin or gut conditions have left…" canonical: "https://www.vitalsvault.com/treatments/care-b12-injection" last-updated: 2026-08-22 --- # Vitamin B12 Injection, Prescribed Online | Vitals Vault > Methylcobalamin B12 given by injection, which bypasses absorption problems in the gut entirely. Useful where diet, age, metformin or gut conditions have left… ![Methylcobalamin (B12) injection package](https://static.vitalsvault.com/treatments/editorial/6acaeb53df0aeb98b45e0e41-lane61-care-b12-injection-cms-1200-64eb6f4af8ec6c48.webp) # Vitamin B12 Injection Injection · 5 mg/mL methylcobalamin - Bypasses gut absorption - Supports energy and nerve health - One vial lasts about ten weeks Choose your plan70-day supply$119 every 70 days$52.00/mo equivalent Start with a $20.00 clinician review The review fee is refunded if you’re not prescribed. Medication is billed separately only if prescribed. [Start as a man](https://www.vitalsvault.com/checkout/medications/app?plan=8dab1ce9-fe8d-4b41-aabe-60fff635c59c&gender=male&flow=payment-first&skipWelcome=true&source=treatments)[Start as a woman](https://www.vitalsvault.com/checkout/medications/app?plan=8dab1ce9-fe8d-4b41-aabe-60fff635c59c&gender=female&flow=payment-first&skipWelcome=true&source=treatments) Prescribed only if appropriate. Compounded medications are not FDA-approved. Review the full terms in checkout. Licensed cliniciansFree shipping ## Why injectable B12? B12 absorption depends on a specific mechanism in the gut that ageing, gut conditions and long-term metformin all interfere with. Injecting bypasses that entirely. It is worth being clear about what it does and does not do: correcting a genuine deficiency helps, but B12 is not a general energy treatment for people whose levels are already normal. ## What to expect - Bypasses the gut — The reason injection is used rather than a tablet. - Pink urine is normal — The excess being excreted, nothing more. - Weekly rhythm — One vial covers around ten weeks. - Only helps a real deficiency — If levels are already normal, look elsewhere for fatigue. ### Your treatment Vitamin B12 injection Your prescription confirms the strength, quantity and dispensing schedule. ### Your routine Follow your prescribed injection instructions and schedule. Follow your clinician’s instructions and the pharmacy label. ### Delivered discreetly Free shipping, in discreet packaging. Treatment ships only after your clinician approves a prescription. ### Clinician-guided care A plan reviewed around your health. Your clinician determines whether treatment is appropriate for you. Your selected plan 70-day supply $119 every 70 days Prescribed only if appropriate. Billing frequency and shipment quantity may differ; your prescription confirms what is dispensed. ## What you’ll feel ### Targeted support Filling the gaps everyday diet leaves behind. ### Energy and recovery Support for how you feel day to day. ### Chosen against labs Clinician-reviewed, not picked off a shelf. ### Easy to keep up One routine, delivered to your door. ## How it works 1. ![Online consultation with a licensed clinician](https://static.vitalsvault.com/treatments/editorial/vv-step-clinician-neutral-6719a9b7f7adcdf4.webp)Step 1 ### Online visit and review Answer a few health questions. A licensed clinician reviews them online. No waiting rooms. Reviewed within 72 hours 2. ![Prescription approved](https://static.vitalsvault.com/treatments/editorial/vv-hiw-step3-delivered-v1-2792b7b7fff611e1.webp)Step 2 ### Ships to your door If prescribed, your medication ships free and discreetly. 2–5 business days 3. ![Feeling the difference](https://static.vitalsvault.com/treatments/editorial/6abf4b226b5b5631c8a311f1-vv-step-outcome-nutrients-men-3833fc8c62610749.webp)Step 3 ### Feel the difference Your clinician checks in and adjusts your plan as you go. Ongoing support ## How to take it Inject the prescribed dose subcutaneously or intramuscularly once weekly, or as directed ## Side effects and safety Vitamin B12 injection is FDA approved for B12 deficiency caused by poor absorption, including pernicious anemia. Using it for energy or weight is off-label. Tell your care team straight away if you get trouble breathing, throat swelling or hives after an injection, vision changes, chest tightness or leg swelling, muscle weakness, or an irregular heartbeat. Common side effects - mild diarrhea - itching - rash - a reaction where the injection was given Rare but serious - severe allergic reactions, which have been reported after injected B12 - low potassium and heart rhythm problems when severe anemia is treated quickly - fluid on the lungs early in treatment - rapid worsening of vision in people with an inherited eye condition called Leber's disease Do not take this if you are sensitive to cobalt or to vitamin B12. This is not a complete list of side effects. Message your care team about any symptom that worries you. ## What the research measured 3.6%Of US adults aged 19 and older fall below 200 pg/mL, the cutoff used to define deficiency in that survey 12.5%Fall below 300 pg/mL, the level described as low or marginal status 203 to 813 pg/mLThe normal serum B12 range published by the NIH Office of Dietary Supplements Thresholds and population figures from the NIH Office of Dietary Supplements Vitamin B12 Fact Sheet for Health Professionals, citing the National Health and Nutrition Examination Survey 2007 to 2018. ODS does not set one flat diagnostic cutoff, it notes that clinicians use values lower than 200 or 250 pg/mL, and 200 is the threshold that prevalence analysis used. [Read the source research](https://ods.od.nih.gov/factsheets/VitaminB12-HealthProfessional/) ## More in this category ![Methionine / Inositol / Choline / B12 injection package](https://static.vitalsvault.com/treatments/editorial/6acaeb7289c3af32bec9b844-lane61-care-micc-cms-1200-3ff93f934873d37b.webp) ### MICC Lipotropic Injection Injection · Methionine / Inositol / Choline / B12 [Explore MICC Lipotropic Injection](https://www.vitalsvault.com/treatments/care-micc?audience=men&source=catalog) ## Your questions, answered. Who benefits from B12 injections? People with genuinely low levels — often from age-related absorption changes, gut conditions, a plant-based diet, or long-term metformin use. If your levels are normal, more B12 is unlikely to change how you feel. Why is my urine pink afterwards? B12 is a deep red compound and the excess is excreted. Pink urine for a day or so is expected and harmless. How often do I inject? Typically weekly, though your clinician may set a different schedule. One 10 mL vial covers roughly ten weeks. Can I take too much? B12 is water-soluble and the excess is excreted rather than stored, so toxicity is not a practical concern. ## Start your plan today 70-day supply · $119 every 70 days [Start as a man](https://www.vitalsvault.com/checkout/medications/app?plan=8dab1ce9-fe8d-4b41-aabe-60fff635c59c&gender=male&flow=payment-first&skipWelcome=true&source=treatments)[Start as a woman](https://www.vitalsvault.com/checkout/medications/app?plan=8dab1ce9-fe8d-4b41-aabe-60fff635c59c&gender=female&flow=payment-first&skipWelcome=true&source=treatments) ## The clinicians behind your care Your treatment is reviewed and prescribed by US-licensed clinicians in our network. ![Diana Kumar, MD, FACOG](https://static.vitalsvault.com/treatments/editorial/diana-kumar-md-c56d4b361d5774a7.webp) ### Diana Kumar, MD, FACOG Women's hormone health Board certified in obstetrics and gynecology and a Menopause Society Certified Practitioner. Works with members on perimenopause, menopause and hormone therapy. ![William Blackwell, MD](https://static.vitalsvault.com/treatments/editorial/william-blackwell-md-da493dcf19541ad1.webp) ### William Blackwell, MD Weight and metabolic health Board certified in emergency medicine and practicing telehealth since 2018. Focuses on weight management and metabolic health. ![Meenal Kheterpal, MD, FAAD](https://static.vitalsvault.com/treatments/editorial/kheterpal-md-faad-0719a17d75055313.webp) ### Meenal Kheterpal, MD, FAAD Dermatology Board certified dermatologist and Associate Professor of Dermatology at Duke University School of Medicine. Specializes in skin cancer and dermato-oncology. ![Shamail Tariq, MD](https://static.vitalsvault.com/treatments/editorial/shamail-tariq-md-18ac53212de5decd.webp) ### Shamail Tariq, MD Cardiometabolic health Board certified in cardiovascular disease and interventional cardiology. Focuses on preventive cardiology, blood pressure and cholesterol. ![Payel Gupta, MD](https://static.vitalsvault.com/treatments/editorial/payel-gupta-md-761421d304fefc01.webp) ### Payel Gupta, MD Allergy and immunology Triple board certified in allergy and immunology, internal medicine and pediatrics. Clinical instructor at the Icahn School of Medicine at Mount Sinai. --- Canonical HTML: https://www.vitalsvault.com/treatments/care-b12-injection - [llms.txt](https://www.vitalsvault.com/llms.txt) - [sitemap.xml](https://www.vitalsvault.com/sitemap.xml) - [Developer portal](https://www.vitalsvault.com/developers)