Why is this medication prescribed?
Ethambutol eliminates certain bacteria that cause tuberculosis (TB). It is used with other medicines to treat tuberculosis and to prevent you from giving the infection to others.
This medication is sometimes prescribed for other uses; ask your doctor or pharmacist for more information.
How should this medicine be used?
Ethambutol comes as a tablet to take by mouth. It usually is taken once a day in the morning. Follow the directions on your prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand. Take ethambutol exactly as directed. Do not take more or less of it or take it more often than prescribed by your doctor.
What special precautions should I follow?
Before taking ethambutol,
- tell your doctor and pharmacist if you are allergic to ethambutol or any other drugs.
- tell your doctor and pharmacist what prescription and nonprescription medications you are taking, especially antacids and vitamins. Antacids interfere with ethambutol, making it less effective. Take ethambutol 1 hour before or 2 hours after antacids.
- tell your doctor if you have or have ever had kidney disease, gout, or eye disorders such as cataracts.
- tell your doctor if you are pregnant, plan to become pregnant, or are breast-feeding. If you become pregnant while taking ethambutol, call your doctor.
What special dietary instructions should I follow?
Ethambutol may cause upset stomach. Take ethambutol with food.
What should I do if I forget a dose?
Take the missed dose as soon as you remember it. However, if it is almost time for the next dose, skip the missed dose and continue your regular dosing schedule. Do not take a double dose to make up for a missed one.
What side effects can this medication cause?
Although side effects from ethambutol are not common, they can occur. Tell your doctor if any of these symptoms are severe or do not go away:
- loss of appetite
- upset stomach
- numbness and tingling in the hands or feet
If you experience any of the following symptoms, call your doctor immediately:
- blurred vision
- inability to see the colors red and green
- sudden changes in vision
- skin rash
What storage conditions are needed for this medicine?
Keep this medication in the container it came in, tightly closed, and out of reach of children. Store it at room temperature and away from excess heat and moisture (not in the bathroom). Throw away any medication that is outdated or no longer needed. Talk to your pharmacist about the proper disposal of your medication.
In case of emergency/overdose
In case of overdose, call your local poison controlcenter at 1-800-222-1222. If the victim has collapsedor is not breathing, call local emergency services at911.
What other information should I know?
Keep all appointments with your doctor and the laboratory. Your doctor will want to check your response to ethambutol. Blood, kidney, and liver tests may be done also. While you are taking ethambutol, your doctor will want to examine your eyes at least every 3-6 months.
Do not let anyone else take your medication. Ask your pharmacist any questions you have about refilling your prescription.