Antivenin (Crotalidae) Polyvalent Immune Fab (Intravenous Route)

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Side Effects

Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor immediately if any of the following side effects occur:

• Unexplained bleeding or bruising

• Cough
• Difficulty in breathing
• Difficulty in swallowing
• Dizziness or lightheadedness
• Fast heartbeat
• Fever
• Hives or welts
• Itching of skin
• Joint pain
• Large, hive-like swellings on the eyelids, face, lips, mouth, and/or tongue
• Muscle pain
• Noisy breathing
• Redness of skin
• Shortness of breath
• Skin rash
• Wheezing

Check with your doctor as soon as possible if any of the following side effects occur:

• Areas of pain, redness, and swelling
• Chest pain
• Chills
• Discharge from wound
• Pain, tenderness, and warmth at wound site
• Unusual tiredness or weakness

Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

• Nausea

• Back pain
• Generalized numbness, tingling, crawling, prickling, “pins and needles” feelings
• Hard bumps under the skin
• Loss of appetite
• Nervousness
• Numbness and tingling around the mouth
• Increased amount of phlegm

Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.

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

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