Ethambutol

  • Brand Name : Myambutol
  • Drug Class : Antitubercular Agents
  • Medical Author : Sarfaroj Khan, BHMS, PGD Health Operations
  • Medical Reviewer :
  • _eael_post_view_count : 11

Brand Name: Myambutol

Generic Name: Ethambutol

Drug Class: Antitubercular Agents

What Is Ethambutol and How Does It Work?

Ethambutol is a prescription medication used to treat Tuberculosis

  • Ethambutol is available under the following different brand names: Myambutol.

What Are Dosages of Ethambutol?

Adult and pediatric dosage

Tablet

  • 100mg
  • 400mg

Tuberculosis 

Adult dosage

Prescribing information

  • Initial TB treatment: 15 mg/kg orally once daily
  • Prior TB treatment: 25 mg/kg orally once daily; after 60 days, decrease to 15 mg/kg orally once daily

Daily administration

  • 40-55 kg: 800 mg orally
  • 56-75 kg: 1.2 g orally
  • Over 75 kg: 1.6 g orally

Twice weekly administration

  • 40-55 kg: 2 g orally
  • 56-75 kg: 2.8 g orally
  • Over 75 kg: 4 g orally

3 times per week administration

  • 40-55 kg: 1.2 g orally
  • 56-75 kg: 2 g orally
  • Over 75 kg: 2.4 g orally

Pediatric dosage

Prescribing information: 

  • Children younger than 13 years of age: Not recommended

Guidelines from the American Thoracic Society (ATS), Centers for Disease Control and Prevention (CDC), and the Infectious Diseases Society of America (IDSA)

  • 15-20 mg/kg/day orally; not to exceed 1 g/day or
  • 50 mg/kg orally twice per week; not to exceed 2.5 g/dose

Guidelines from the American Academy of Pediatrics (AAP)

  • 15-25 mg/kg/day orally; not to exceed 1 g/day or 
  • 50 mg/kg orally twice per week; not to exceed 2.5 g/dose

Dosage Considerations – Should be Given as Follows: 

  • See “Dosages”.

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