CVS Vitamin B12 Oral

In Depth

Generic Name: CYANOCOBALAMIN - ORAL
Pronounced: (SYE-an-oh-koe-BAL-a-min)

CVS Vitamin B12 Oral Side Effects

This product usually has no side effects. If you have any unusual effects, contact your doctor or pharmacist promptly.

If your doctor has directed you to use this medication, remember that he or she has judged the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.

If you have severe anemia, this medication may rarely cause low potassium levels in the blood (hypokalemia) as your body makes new red blood cells. Tell your doctor immediately if any of these unlikely but serious side effects occur:

muscle cramps
weakness
irregular heartbeat

A very serious allergic reaction to this drug is rare. However, seek immediate medical attention if you notice any symptoms of a serious allergic reaction, including:

rash
itching/swelling (especially of the face/tongue/throat)
severe dizziness
trouble breathing

This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.

In the US -

Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.

CVS Vitamin B12 Oral Precautions

Before taking cyanocobalamin, tell your doctor or pharmacist if you are allergic to it; or to any form of vitamin B12; or to cobalt; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.

If you have any of the following health problems, consult your doctor or pharmacist before using this medication:

a certain eye disease (Leber's optic neuropathy)
a certain blood disorder (polycythemia vera)
gout
iron or folic acid deficiency anemia
low potassium blood levels (hypokalemia)

Cyanocobalamin taken by mouth should only be used if your body can properly absorb it. You may need a form of vitamin B12 that is injected or inhaled in the nose if you have any of the following health problems:

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