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Cyanocobalamin nasal

Important Note

The following information is intended to supplement, not substitute for, the expertise and judgment of your physician, pharmacist or other healthcare professional. It should not be construed to indicate that use of the drug is safe, appropriate, or effective for you. Consult your healthcare professional before using this drug.





This medication is used to treat vitamin B12 shortage. This product should not be used to test vitamin B12 absorption (Schilling test).

How To Use

This medication is usually used once a week in the nose or as directed by your doctor. Use this medicine at least one hour before or after hot food or drink. Learn the proper way to use this from your pharmacist or doctor and follow all instructions carefully. Certain conditions may require lifelong use of this drug. Treatment is usually postponed when nasal congestion, common cold or allergies are present.

Side Effects

Headache, nausea, dizziness or nasal congestion may occur. If these persist or worsen, notify your doctor. Though very unlikely to occur, notify your doctor if you develop any of the following: muscle cramps or weakness, leg or arm swelling or pain, tingling of the hands or feet. In the unlikely event you have an allergic reaction to this drug, seek medical attention immediately. Symptoms include: rash, itching, swelling, dizziness, trouble breathing. If you notice other effects not listed above, contact your doctor or pharmacist.


Before using this drug, tell your doctor your medical history, including: Leber's disease (an eye problem), allergies (especially drug or food allergies). Do not use folic acid in place of vitamin B12 treatments. Limit alcohol use as it may affect the level of vitamin B12 in your body. This medication should be used only when clearly needed during pregnancy. Discuss the risks and benefits with your doctor.

Drug Interactions

Tell your doctor of all nonprescription and prescription medication you may use, especially of: colchicine, para-aminosalicylic acid. Also report the use of drugs that can affect blood cell production such as: anti-cancer drugs, chloramphenicol, zidovudine, ganciclovir. Methotrexate, pyrimethamine and certain antibiotics may interfere with folic acid and vitamin B12 blood test results. Do not start or stop any medicine without doctor or pharmacist approval.


If overdose is suspected, contact your local poison control center or emergency room immediately.


Do not share this medication with others. Laboratory tests will be run to monitor the effects of the drug. Keep all laboratory and doctor appointments.

Missed Dose

If you miss a dose, use it as soon as you remember. If it is near the time of the next dose, skip the missed dose and resume your usual dosing schedule. Do not "double-up" the dose to catch up.


Store at room temperature between 59 and 86 degrees F (15-30 degrees C) away from light and moisture. Do not freeze.