SIDE EFFECTS: Flushing, tingling of the hands/feet, shivering, or dizziness may occur. The area around the injection site may be tender, irritated, or discolored (brown). If any of these effects persist or worsen, contact your doctor or pharmacist promptly. Some people may experience a delayed reaction 1-2 days after their treatment. These side effects usually lessen within 3 to 4 days if the medication was injected into a vein or within 3 to 7 days if the medication was injected into a muscle. Tell your doctor if any of these side effects persist or worsen more than 4 to 7 days after your treatment: back/joint/muscle aches, chills, moderate to high fever, headache, nausea/vomiting. Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects. Tell your doctor right away if you have any serious side effects, including: abdominal pain, fast/slow/irregular heartbeat, severe headache, blurred vision. Get medical help right away if any of these rare but very serious side effects occur: chest pain, seizures. A very serious allergic reaction to this drug may occur. Get medical help right away if you notice any of the following symptoms of a serious allergic reaction: 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 or at www.fda.gov/medwatch. In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.

PRECAUTIONS: Before using this medication, tell your doctor or pharmacist if you are allergic to it; 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. This medication should not be used if you have certain medical conditions. Before using this medicine, consult your doctor or pharmacist if you have: low blood count not due to low iron (e.g., vitamin B12/folate deficiency), active kidney infection. Before using this medication, tell your doctor or pharmacist your medical history, especially of: severe allergic reactions, asthma, bleeding problems (e.g., hemophilia), heart disease (e.g., chest pain, heart attack, heart failure), Hodgkin's disease, autoimmune disease (e.g., rheumatoid arthritis, ankylosing spondylitis, lupus), kidney disease/dialysis, liver disease. During pregnancy, this medication should be used only when clearly needed. Discuss the risks and benefits with your doctor. This medication passes into breast milk and may have undesirable effects on a nursing infant. Consult your doctor before breast-feeding.

DRUG INTERACTIONS: Drug interactions may change how your medications work or increase your risk for serious side effects. This document does not contain all possible drug interactions. Keep a list of all the products you use (including prescription/nonprescription drugs and herbal products) and share it with your doctor and pharmacist. Do not start, stop, or change the dosage of any medicines without your doctor's approval. Some products that may interact with this drug include: other iron products. This medication may interfere with certain laboratory tests (including bilirubin, calcium, and clotting times), possibly causing false test results. Make sure laboratory personnel and all your doctors know you use this drug.

OVERDOSE: If someone has overdosed and has serious symptoms such as passing out or trouble breathing, call 911. Otherwise, call a poison control center right away. US residents can call their local poison control center at 1-800-222-1222. Canada residents can call a provincial poison control center.