May 26, 2017
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Myambutol Patient Information Including Side Effects

Brand Names: Myambutol

Generic Name: ethambutol (Pronunciation: eth AM bue tol)

What is ethambutol (Myambutol)?

Ethambutol is an antibiotic. It prevents growth of the tuberculous bacteria in the body.

Ethambutol is used to treat tuberculosis (TB).

Ethambutol may also be used for purposes other than those listed in this medication guide.

Ethambutol 400 mg-BAR

oval, white, imprinted with b, 923 400

Ethambutol 400 mg-VER

round, white, imprinted with VP, 1 4

Myambutol 400 mg

round, white, imprinted with LL, M 7

What are the possible side effects of ethambutol (Myambutol)?

If you experience any of the following serious side effects, stop taking ethambutol and seek emergency medical attention or contact your doctor immediately:

  • an allergic reaction (difficulty breathing; closing of the throat; swelling of the lips, tongue, or face; or hives);
  • vision changes (e.g., blurring, red-green color blindness);
  • a rash;
  • numbness or tingling in your fingers, toes, hands, or feet;
  • confusion, disorientation, or hallucinations; or
  • fever.

Other, less serious side effects may be more likely to occur. Continue to take ethambutol and talk to your doctor if you experience

  • stomach upset, nausea, vomiting, abdominal pain, or decreased appetite;
  • headache;
  • mild dizziness;
  • worsening gout; or
  • joint pain.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088. You may report side effects to FDA at 1-800-FDA-1088.

Read the Myambutol (ethambutol) Side Effects Center for a complete guide to possible side effects

What is the most important information I should know about ethambutol (Myambutol)?

Take all of the ethambutol that has been prescribed for you even if you begin to feel better. Your symptoms may begin to improve before the infection is completely treated.

Call your doctor immediately if you experience changes in vision (e.g., blurring, red-green color blindness) or a rash.

Side Effects Centers

Myambutol - User Reviews

Myambutol User Reviews

Now you can gain knowledge and insight about a drug treatment with Patient Discussions.

Here is a collection of user reviews for the medication Myambutol sorted by most helpful. Patient Discussions FAQs

Report Problems to the Food and Drug Administration


You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.

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