Methylcobalamin (B12)
Vitamin B12 as a shot, in the form your body can use straight away without converting it first.
Prescription only. A consultation does not guarantee a prescription. Compounded medications are not FDA-approved.
- Aimed at filling a gap. People ask about these when pills are not doing the job. Your doctor decides whether you need it, and whether this is the right way to get it.
- A shot, not a pill. It goes in under the skin with a short, fine needle. Most people do it themselves at home, once their doctor has shown them how.
- A doctor decides. Nothing ships until a doctor licensed in your state has read your health form and written a prescription. Signing up does not guarantee one.
This is vitamin B12 as methylcobalamin, the form your body can use straight away. The cheaper form, cyanocobalamin, has to be converted first. You give this one to yourself in the muscle or under the skin.
How it works
Methylcobalamin hands out methyl groups in two chemical cycles your body runs constantly. That is how it supports red blood cell production and the insulating sheath around your nerves. A shot skips the gut entirely, which is the point for anyone whose capsules have not moved the needle.
Who it's for
People ask about B12 shots when tiredness is the reason. The B-complex shot has B12 in it alongside the others. Your doctor decides which fits you.
Three steps.
Tell us about your health
Fill out a short health form online, whenever suits you. A doctor reads every answer before anything is prescribed.
A licensed doctor reviews it
A doctor licensed in your state reads your answers and decides if this is right for you. Signing up does not mean you will get a prescription.
National Health Rx ships it to your door
Your medicine is made to match your prescription and sent overnight to 49 states, with the supplies you need to use it. Texas is not available.
What you get.
- A visit with a licensed doctor, online
- Your prescription, if the doctor approves one
- Your medicine, made to order by National Health Rx
- The syringes, needles and wipes you need to use it
- Your care team, whenever you need them
How much to take, how often, and for how long are your doctor's call, and they print it on your label. The pharmacy sets the use-by date and prints that on your label too. Always go by your label.
Ready to find out if it is right for you?
- An online intake you can finish in a few minutes
- A doctor licensed in your state reads it
- Made to order and shipped by National Health Rx if you are approved
- Your care team stays reachable afterwards
Prescription only. A consultation does not guarantee a prescription. Compounded medications are not FDA-approved.
Common questions
Who is Methylcobalamin (B12) for?
Patients with low B12, fatigue, or malabsorption, and anyone wanting the active methyl form rather than cyanocobalamin.
How much do I take?
Your doctor decides that and prints it on your label. We don't list doses here, because the right amount depends on you and on the exact product the pharmacy makes. Always go by your label.
Who shouldn't take it?
Your doctor decides that. They look at your health history, the medicines you already take, and why you want it, and they'll tell you if Methylcobalamin (B12) isn't a good fit. Tell them if you're pregnant or breastfeeding.
Are there side effects?
Any prescription medicine can have them. Your doctor will go over what to watch for before you start, and the paperwork that comes with your order lists them. If something worries you, call your care team. Don't wait for your next check-in.
Will it affect my other medicines?
It might, so list everything you take when you sign up, including vitamins and supplements. Checking that list is part of your doctor's job, and it's not something a web page can answer.
Is this FDA approved?
No. It's made to order for you by a licensed pharmacy, which is called compounding. The FDA doesn't review or approve compounded medicines, and they aren't generic versions of brand-name drugs.
Who makes it?
National Health Rx, a licensed 503A compounding pharmacy. That means they mix each order for one patient at a time.
Where do you ship?
We'll confirm yours when you sign up.
