Cobal 1000

Cyanocobalamin is a prescription medication used to used to treat and prevent a lack of vitamin B12.

Cyanocobalamin belongs to a group of drugs called vitamins. These help to supply vitamin B12.

This medication is available in an injectable form to be given directly into the muscle (IM) or under the skin by a healthcare professional.

Common side effects of cyanocobalamin include diarrhea and feeling as if your entire body is swollen.

Tell your doctor about all the medicines you take, including prescription and non-prescription medicines, vitamins, and herbal supplements. Especially tell your doctor if you take:

• antibiotics such as chloramphenicol (Chloromycetin, Mychel-S)
• colchicine (Colcrys)
• folic acid
• methotrexate (Rheumatrex, Trexall)
• para-aminosalicylic acid (Paser)
• pyrimethamine (Daraprim)

Your doctor may need to change the doses of your medications or monitor you carefully for side effects.

This is not a complete list of cyanocobalamin drug interactions. Ask your doctor or pharmacist for more information.

• If you have an allergy to cyanocobalamin or any other part of Cobal 1000 (cyanocobalamin (B12) injection).
• If you are allergic to any drugs like this one, any other drugs, foods, or other substances. Tell your doctor about the allergy and what signs you had, like rash; hives; itching; shortness of breath; wheezing; cough; swelling of face, lips, tongue, or throat; or any other signs.

This medicine may interact with other drugs or health problems.

Tell your doctor and pharmacist about all of your drugs (prescription or OTC, natural products, vitamins) and health problems. You must check to make sure that it is safe for you to take this medicine with all of your drugs and health problems. Do not start, stop, or change the dose of any drug without checking with your doctor.

• Tell all of your health care providers that you take Cobal 1000. This includes your doctors, nurses, pharmacists, and dentists.
• Have blood work checked as you have been told by the doctor. Talk with the doctor.
• Talk with your doctor before you drink alcohol.
• Tell your doctor if you are pregnant or plan on getting pregnant. You will need to talk about the benefits and risks of using this medicine while you are pregnant.
• Tell your doctor if you are breast-feeding. You will need to talk about any risks to your baby.
• Very bad and sometimes deadly allergic reactions have rarely happened. Talk with your doctor.
• Some products have benzyl alcohol. Do not give a product that has benzyl alcohol in it to a newborn. Talk with the doctor to see if this product has benzyl alcohol in it.

WARNING/CAUTION: Even though it may be rare, some people may have very bad and sometimes deadly side effects when taking a drug. Tell your doctor or get medical help right away if you have any of the following signs or symptoms that may be related to a very bad side effect:

• Signs of an allergic reaction, like rash; hives; itching; red, swollen, blistered, or peeling skin with or without fever; wheezing; tightness in the chest or throat; trouble breathing or talking; unusual hoarseness; or swelling of the mouth, face, lips, tongue, or throat.
• Swelling, warmth, numbness, change of color, or pain in a leg or arm.
• Very loose stools (diarrhea).
• Feeling very tired or weak.
• Chest pain.
• Shortness of breath, a big weight gain, or swelling in the arms or legs.
• Change in balance.
• A burning, numbness, or tingling feeling that is not normal.
• Any unexplained bruising or bleeding.

• If you need to store this medicine at home, talk with your doctor, nurse, or pharmacist about how to store it.
• Keep all drugs in a safe place. Keep all drugs out of the reach of children and pets.
• Check with your pharmacist about how to throw out unused drugs.

• If your symptoms or health problems do not get better or if they become worse, call your doctor.
• Do not share your drugs with others and do not take anyone else's drugs.
• Keep a list of all your drugs (prescription, natural products, vitamins, OTC) with you. Give this list to your doctor.
• Talk with the doctor before starting any new drug, including prescription or OTC, natural products, or vitamins.
• Some drugs may have another patient information leaflet. Check with your pharmacist. If you have any questions about Cobal 1000, please talk with your doctor, nurse, pharmacist, or other health care provider.
• If you think there has been an overdose, call your poison control center or get medical care right away. Be ready to tell or show what was taken, how much, and when it happened.

This information should not be used to decide whether or not to take this medicine or any other medicine. Only the healthcare provider has the knowledge and training to decide which medicines are right for a specific patient. This information does not endorse any medicine as safe, effective, or approved for treating any patient or health condition. This is only a brief summary of general information about Cobal 1000. It does NOT include all information about the possible uses, directions, warnings, precautions, interactions, adverse effects, or risks that may apply to this medicine. This information is not specific medical advice and does not replace information you receive from the healthcare provider. You must talk with the healthcare provider for complete information about the risks and benefits of using Cobal 1000.

Review Date: October 4, 2017