Vitamin B12 (cyanocobalamin) Injectable Solution 1000 mcg/mL

Instructions

Carefully follow the instructions for preparing this medicine before injection.

Always inspect the medicine before using.

The liquid should be clear and dark red.

Do not use the medicine if it contains any particles or if it has changed color.

Keep medicine at room temperature. Protect from light.

Injecting cold drug may be uncomfortable.

Speak with your nurse or pharmacist about how long the medicine can be stored safely at room temperature or in the refrigerator before it needs to be discarded.

Never use any medicine that has expired.

Please ask your doctor, nurse, or pharmacist how to discard unused medicines safely.

Ask your doctor, nurse or pharmacist to show you how to use this medicine correctly.

Change the location of the injection each time. Choose a location at least 1 inch from the last injection.

It is important that you keep taking each dose of this medicine on time even if you are feeling well.

Drug interactions can change how medicines work or increase risk for side effects. Tell your health care providers about all medicines taken. Include prescription and over-the-counter medicines, vitamins, and herbal medicines. Speak with your doctor or pharmacist before starting or stopping any medicine.

Speak with your doctor or pharmacist before starting any other vitamins.

It is very important that you follow your doctor's instructions for all blood tests.

Cautions

Tell your doctor and pharmacist if you ever had an allergic reaction to a medicine.

Do not use the medication any more than instructed.

Contact your doctor if you develop any signs of a new infection such as fever, cough, sore throat, or chills.

Tell the doctor or pharmacist if you are pregnant, planning to be pregnant, or breastfeeding.

Ask your pharmacist how to properly throw away used needles or syringes.

Do not share this medicine with anyone who has not been prescribed this medicine.

Side Effects

The following is a list of some common side effects from this medicine. Please speak with your doctor about what you should do if you experience these or other side effects.

• diarrhea
• feeling of swelling of the body
• pain, redness, swelling near injection

Call your doctor or get medical help right away if you notice any of these more serious side effects:

• irregular heart beat
• swelling of the legs, feet, and hands
• muscle cramps or weakness
• shortness of breath
• unusual or unexplained tiredness or weakness
• sudden or unexplained weight gain

A few people may have an allergic reaction to this medicine. Symptoms can include difficulty breathing, skin rash, itching, swelling, or severe dizziness. If you notice any of these symptoms, seek medical help quickly.