Myambutol (Ethambutol)

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Myambutol Brand
Dosage Quantity & Price
Ethambutol (Generic alternate to Myambutol) Generic
Dosage Quantity & Price
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Myambutol (generically known as ethambutol) is an antibiotic that is used to treat tuberculosis (TB) and other bacterial infections. It is sometimes prescribed in combination with other antibiotics to treat TB and may be used for other purposes as well.

Ethambutol belongs to the group of drugs called antimycobacterial antibiotics. It works by inhibiting RNA synthesis and bacterial replication, which stops TB bacteria from making the building blocks they need to multiply and survive.

Myambutol is used to treat tuberculosis (TB) and is usually given together with at least one other tuberculosis medicine. It should not be used as the sole antituberculous drug, but rather in conjunction with other TB medications.

Use and Dosage

Myambutol comes as a tablet medication that is taken orally with or without food as directed by your doctor, usually once daily. In some cases, the tablet may be taken twice weekly. Follow your doctor's instructions precisely, and the dosage will depend on several factors such as age, weight, medical condition, and response to treatment.

If you take antacids that contain aluminum, you should take Myambutol at least four hours before taking the antacid to avoid any negative interactions.

To ensure the best results, take this medication at even intervals throughout the day. You can keep track of your dosage by taking the medication at the same time(s) every day.

Continue taking Myambutol (and any other TB medication you've been prescribed) until the full prescribed amount is finished, even if your symptoms disappear. Stopping the medication too early or skipping doses may allow the bacteria to continue to grow, which can lead to a return of the infection and can make it more challenging to treat (resistant).

Side Effects

Common Side Effects of Myambutol (Ethambutol):

  • Dizziness
  • Headache
  • Indigestion
  • Itching
  • Joint pain
  • Loss of appetite
  • Nausea
  • Rash
  • Stomach pain
  • Vomiting

Serious Side Effects of Myambutol (Ethambutol):

  • Bleeding gums
  • Blurred vision
  • Burning in your eyes
  • Chest pain
  • Clay-colored stools
  • Cold or flu symptoms
  • Confusion
  • Dark urine
  • Difficulty breathing
  • Easy bruising or bleeding
  • Fever
  • General ill feeling
  • Hallucinations
  • Hives
  • Increased sensitivity of your eyes to light
  • Little or no urinating
  • Loss of color vision
  • Loss of vision in one eye that lasts an hour or longer
  • New or worsening cough with fever
  • Nosebleeds
  • Numbness of tingling in your hands or feet
  • Pain behind the eyes
  • Pain with eye movement
  • Painful mouth sores
  • Red or purple skin rash that spreads (especially in the face or upper body) and causes blistering and peeling
  • Shortness of breath
  • Skin pain
  • Skin sores
  • Sore throat
  • Swelling of your face lips tongue or throat
  • Swollen glands
  • Trouble focusing
  • Upper stomach pain
  • Vision loss that may be permanent
  • Vision problems
  • Yellowing of the skin or eyes (jaundice)

Forms and Strength

Myambutol (Ethambutol) is available in the following forms and strength:

Myambutol: Tablet

  • 100 mg
  • 400 mg

Ethambutol: Tablet

  • 400 mg


  • Ethambutol should not be used as the sole treatment for tuberculosis (TB) and should be used in combination with other TB medications.
  • Ethambutol may cause vision problems, including loss of visual acuity and decreased ability to distinguish between red and green colors, especially at higher doses, and prolonged use.
  • Patients with kidney disease or those who are undergoing hemodialysis may need a dosage adjustment and close monitoring while taking Myambutol.
  • Ethambutol should be used with caution in patients with liver disease or a history of gout.
  • Ethambutol has been associated with peripheral neuropathy, which is nerve damage that can cause numbness, tingling, or pain in the hands and feet.
  • Ethambutol should be used with caution in patients who are pregnant or breastfeeding, as its safety has not been established in these populations.
  • Patients taking Myambutol should avoid alcohol, as it may increase the risk of liver damage and other side effects.

Frequently Asked Questions (FAQ)

How long should I take Myambutol?

The length of treatment with Myambutol depends on several factors such as the type of infection being treated. Follow your healthcare provider's instructions and complete the full course of treatment.

Can Myambutol be used to treat other infections besides tuberculosis?

Myambutol is primarily used to treat tuberculosis and is not typically used to treat other infections.

What should I do if I experience vision problems while taking Myambutol?

If you experience vision changes or problems while taking Myambutol, you should contact your healthcare provider immediately.

Can Myambutol be used in children?

Myambutol can be used in children, but dosage adjustments may be necessary based on factors such as weight and age.


It's important to purchase Myambutol from verified Canadian pharmacy.

Additional information

Generic name:

Ethambutol, Ethambutol Hcl




100mg, 400mg

Quantities Available: