Advertisement
Cleveland Clinic is a non-profit academic medical center. Advertising on our site helps support our mission. We do not endorse non-Cleveland Clinic products or services. Policy
VITAMIN B12 (VAHY tuh min B12) prevents and treats low vitamin B12 levels in your body. It is used in people who do not get enough vitamin B12 from their diet or when their digestive tract does not absorb enough. Vitamin B12 plays an important role in maintaining the health of your nervous system and red blood cells.
Advertisement
Cleveland Clinic is a non-profit academic medical center. Advertising on our site helps support our mission. We do not endorse non-Cleveland Clinic products or services. Policy
This medicine may be used for other purposes; ask your health care provider or pharmacist if you have questions.
They need to know if you have any of these conditions:
Take this medication by mouth. Take it as directed on the label. You can take it with or without food. If it upsets your stomach, take it with food. Do not use it more often than directed.
Talk to your care team about the use of this medication in children. While it may be given to children for selected conditions, precautions do apply.
Overdosage: If you think you have taken too much of this medicine contact a poison control center or emergency room at once.
NOTE: This medicine is only for you. Do not share this medicine with others.
If you miss a dose, take it as soon as you can. If it is almost time for your next dose, take only that dose. Do not take double or extra doses.
This list may not describe all possible interactions. Give your health care provider a list of all the medicines, herbs, non-prescription drugs, or dietary supplements you use. Also tell them if you smoke, drink alcohol, or use illegal drugs. Some items may interact with your medicine.
Advertisement
Visit your care team for regular checks on your progress. Tell your care team if your symptoms do not start to get better or if they get worse.
Side effects that you should report to your care team as soon as possible:
Side effects that usually do not require medical attention (report these to your care team if they continue or are bothersome):
This list may not describe all possible side effects. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
Keep out of the reach of children and pets.
Store at room temperature between 20 and 25 degrees C (68 and 77 degrees F). Get rid of any unused medication after the expiration date.
To get rid of medications that are no longer needed or have expired:
NOTE: This sheet is a summary. It may not cover all possible information. If you have questions about this medicine, talk to your doctor, pharmacist, or health care provider.
Advertisement
Copyright ©2025 Elsevier Inc. All Rights Reserved.
Note: Introduction and Additional Common Questions written and medically approved by Cleveland Clinic professionals.