Energy your cells actually make
B12 is a cofactor in the reactions that turn food into usable energy. Low B12 can read as fatigue and weakness.
Methylcobalamin B125 mg/mL prescription injection
$39 $19.50 50% off
first mo.as low as · choose 3 or 12 months
Boost Energy, Mental Clarity and Metabolism
Prescription methylcobalamin B12 · 5 mg/mL
As low as $39 $19.50 50% off for the first month
Choose 3 or 12 months
Running again.
Verified B12 customer
Free shippingDiscreet packaging
No consult feeProvider review included
FSA and HSABenefits cards accepted
Injection or tablet?
Both deliver B12. Only one of them skips the part of the process that fails for a lot of people.
| What changes | Prescription injection | Oral supplement |
|---|---|---|
| How it reaches you | Injected under the skin, so it skips the digestive tract | Swallowed, then absorbed through the stomach and small intestine |
| What can get in the way | Nothing between the dose and the tissue | Stomach acid, intrinsic factor, gut health, and some medications |
| Active form | Methylcobalamin, a biologically active form of B12 | Varies by product, often cyanocobalamin |
| Routine | Schedule set by your clinician | A tablet every day, indefinitely |
| Who decides the dose | A licensed provider, from your symptoms, diet, and prior labs | Whatever the bottle on the shelf says |
Absorption depends on your own diet, medications, and gut health. A licensed provider reviews those before deciding whether an injection is the right route for you.
Get started now
Prescription care from home
One active, at a strength written for you.
An over-the-counter bottle cannot look at your diet, your medications, or your last B12 result. A licensed provider can, and does, before this ships.
Compounded by a licensed 503A pharmacy
Get started now Your vial is compounded in the United States against a prescription written for you, which is why the label carries your name, your active, and your strength. A shelf bottle answers to none of that.
What B12 does
The vitamin your body cannot make.
Red blood cell formation
B12 is required for normal red blood cell production and the oxygen-carrying work those cells do.
Nerve and neurological function
B12 helps maintain the myelin around nerve cells and supports normal neurological function.
A form your body can use
Methylcobalamin is a biologically active form of B12. Rebody delivers it as a prescription injection.
Roles described in the NIH Office of Dietary Supplements Vitamin B12 Fact Sheet for Health Professionals.
B12 results
What the first months looked like.
Daycare pickup is easier
“My B12 was low and I felt terrible every afternoon by the time I picked up my daughter. Four weeks into the shots, I am getting through work and daycare pickup without crashing on the couch. My Rebody clinician explained the lab results clearly, and the shipment included all the supplies.”
More energy after work
“My labs showed low B12 and the clinician recommended weekly shots. After a few weeks I have more energy after work and am not going directly to the couch every day. Rebody included everything I needed with the first shipment.”
Running again
“I eat mostly plant based, so low B12 was not a surprise. What surprised me was how much better I felt after starting the injections. Seven weeks in, I am running before work a few times a week instead of turning around after the first mile.”
Your plan
One vial. 90 days.
- Prescription methylcobalamin B12, filled by a licensed U.S. compounding pharmacy
- Directions and dosing on your pharmacy label
- Online visit and provider review, with no separate consult fee
- Provider messaging while you are on treatment
- Free discreet shipping, no separate delivery fee
- FSA and HSA cards accepted at checkout
- Full refund if a provider does not prescribe
- Pause or cancel before your next shipment
Choose 3 or 12 months Pause or cancel before your next shipment.
How Rebody works
Visit, review, pharmacy, doorstep.
One online visit. Licensed provider review. Pharmacy delivery.
- 01
Complete your online visit
Tell us about your fatigue, diet, medications, health history, and any prior B12 results.
- 02
A licensed provider reviews it
Your provider decides whether prescription methylcobalamin B12 is appropriate and sets your dose.
- 03
A licensed pharmacy fills it
A U.S. compounding pharmacy prepares your 10 mL vial.
- 04
90 days arrive at once
The vial ships free in discreet packaging, with directions and dosing on the pharmacy label.
Methylcobalamin B12
Everything on the label, explained.
Know the form, strength, vial size, supply, price, and prescribing process before you begin.
What exactly is methylcobalamin?
Methylcobalamin is a biologically active form of vitamin B12. Rebody offers it as a prescription injection compounded by a licensed 503A compounding pharmacy in the United States, with the active ingredient, strength, and vial size stated on the label.
What strength and vial size will I receive?
Methylcobalamin 5 mg/mL in a 10 mL vial. The package is designed as an approximately 90-day supply. Your prescription label carries your final dose and directions.
Why an injection instead of an oral B12 supplement?
An injection puts the dose into the tissue rather than through the digestive tract. That matters when diet, medication use, or an absorption problem is part of why B12 is low. Your provider reviews those factors before prescribing.
Is methylcobalamin different from cyanocobalamin?
They are different forms of vitamin B12. Rebody prescribes methylcobalamin, which is a biologically active form. Many over-the-counter tablets use cyanocobalamin instead.
How often will I inject it?
Your clinician sets the injection dose and schedule. Follow your prescription label. Your prescriber sets your final dose and frequency from your health history, so follow the directions on your prescription label and message your care team before changing your schedule.
What does the price cover?
The online provider review, medication when prescribed, and free discreet shipping. There is no separate consult fee and no delivery charge. The vial carries 90 days of treatment.
Can I pay with an FSA or HSA card?
Yes. Rebody accepts FSA and HSA cards at checkout. If your card is declined at the bank, pay another way and send the receipt to your plan administrator.
What happens if a provider does not prescribe B12 for me?
You get your money back. A declined prescription request receives a full refund to your original payment method, and nothing ships.
Safety and prescribing
Important safety information.
Tell your provider about all medications and supplements, allergies, prior B12 results, and your complete health history. Injection-site pain, redness, itching, or swelling can occur.
Seek urgent care for signs of a serious allergic reaction, including trouble breathing, facial swelling, severe dizziness, or fainting. Do not share your vial or injection supplies.
Compounded medications are not FDA-approved or evaluated for safety, efficacy, or quality by the FDA. Prescription required. Not available in all states.Ready to start?
The online visit takes a few minutes. You see the vial, the supply, and the price before a provider reviews anything.
Get started nowStill deciding?
Read how methylcobalamin differs from a shelf supplement, how often it is injected, and what the 90-day shipment costs.
Read the common questionsMethylcobalamin B12 at home
One vial. 90 days. Start today.
Medication, provider review, and free shipping included.