What is Myambutol: Uses, Warnings & Interactions

Updated May 14, 2025  •  Published Dec 30, 2020

Myambutol overview

BRAND NAMES:

  • Myambutol

Generic Names:

  • Ethambutol Hcl

Uses:

  • Treats tuberculosis (TB).

Therapeutic Classes:

  • Antitubercular

Forms:

  • Tablet

How it’s taken:

  • By mouth

What is Myambutol used for?

Myambutol is an antibiotic that treats bacterial infections. It is also used with other medications to treat tuberculosis (TB). It works by stopping the growth of bacteria.

What form(s) does Myambutol come in

  • Tablet

What are common Myambutol doses?

  • Tablet 400MG

Common Myambutol prescriptions

  • Myambutol
    100mg tablet

  • Myambutol
    400mg tablet

How to take Myambutol

  • Take this medicine on a regular schedule. Keep taking it even if you are feeling better. Your doctor will tell you when you can stop taking it.

  • Ethambutol can be taken with food to avoid stomach upset.

  • Your doctor will tell you how much medicine to take and how often.

  • Take this medicine on a regular schedule. Keep taking it even if you are feeling better. Your doctor will tell you when you can stop taking it.

  • Ethambutol can be taken with food to avoid stomach upset.

  • Your doctor will tell you how much medicine to take and how often.

What to do if you miss a dose of Myambutol

  • Take the missed dose as soon as possible.

  • Skip the missed dose if it is almost time for your next regular dose.

  • You should not use two doses at the same time.

Myambutol contraindications

  • You should not use this medicine if you have ever had an allergic reaction to ethambutol or if you have damaged eye nerves (optic neuritis).

Myambutol warnings

  • Wheezing or trouble breathing

  • Hives

  • This medicine may cause blurred vision. If it does, avoid driving or using dangerous machinery.

  • Check with your doctor before taking ethambutol if you have gout, kidney disease, or liver disease.

  • If you are pregnant or breastfeeding, talk to your doctor before taking this medicine.

  • Skin rash

  • Joint pain

  • Fever or chills

  • Numbness, pain, or tingling in hands or feet

Myambutol interactions

  • This medicine may cause blurred vision. If it does, avoid driving or using dangerous machinery.

  • Check with your doctor before taking ethambutol if you have gout, kidney disease, or liver disease.

  • If you are pregnant or breastfeeding, talk to your doctor before taking this medicine.

Myambutol side effects

Serious Side Effects

  • Numbness, pain, or tingling in hands or feet

  • Skin rash

  • Fever or chills

  • Wheezing or trouble breathing

  • Hives

  • Swelling of face, lips, throat

  • Eye pain

  • Any vision changes such as blurring, color blindness, trouble seeing

  • Joint pain

Less Serious Side Effects

  • Nausea and vomiting

  • Dizziness

  • Headache

  • Stomach pain

  • Poor appetite

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