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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 immediately if any of these unlikely but serious side effects occur: vision changes (such as blurred/decreased vision, color blindness), symptoms of liver disease (such as persistent nausea/vomiting, unusual tiredness/weakness, severe stomach/abdominal pain, yellowing eyes/skin, dark urine), numbness/tingling of arms/legs, toe/joint pain.
Tell your doctor immediately if any of these rare but serious side effects occur: mental/mood disorders (such as confusion, hallucinations), signs of a new infection (such as fever, persistent sore throat), easy bleeding/bruising.
A very serious allergic reaction to this drug is rare. However, seek immediate medical attention if you notice any symptoms of a serious allergic reaction, including: 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.
In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.
Read the Myambutol (ethambutol) Side Effects Center for a complete guide to possible side effects
PRECAUTIONS: Before taking ethambutol, 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.
Before using this medication, tell your doctor or pharmacist your medical history, especially of: eye problems (such as optic neuritis, cataracts, diabetic retinopathy), liver disease, kidney disease, alcohol use.
Before having surgery, tell your doctor or dentist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products).
Alcohol may increase the risk of liver disease. Avoid alcoholic beverages while using this medication.
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 but is unlikely to harm a nursing infant. Consult your doctor before breast-feeding. If you have HIV disease, do not breast-feed because breast milk can transmit HIV.
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