Myambutol (Ethambutol) Medication


Myambutol (Ethambutol)

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Table of contents:

Drug Description


Myambutol Ethambutol is a pharmaceutical agent employed in conjunction with complementary medications for the management of tuberculosis (TB). As an antibiotic, Ethambutol exerts the therapeutic effect by impeding bacterial proliferation. Ethambutol is efficacious exclusively against bacterial infections and is not indicated for the treatment of viral maladies, such as the common cold or influenza. The judicious utilization of antibiotics, including Ethambutol, is imperative to mitigate the risk of antimicrobial resistance, ensuring their continued efficacy in addressing future infectious ailments. 

Uses and Dosage 

Myambutol should not be employed as a sole therapeutic agent, neither as an initial nor a retreatment regimen. Myambutol is administered on a once-daily basis, with a dosing interval of 24 hours, and the absorption remains largely unaffected by concurrent food ingestion. In general, the course of therapy should persist until bacteriological conversion becomes a permanent status, and the patient has achieved maximal clinical improvement. 

The utilization of Myambutol is not recommended for pediatric patients below the age of thirteen, as the establishment of safe conditions for use in this population remains unverified. 

For the initial treatment of individuals with no prior antituberculous therapy, the recommended dose of Myambutol is 15 mg/kg (equivalent to 7 mg/lb) based on body weight, administered as a solitary oral dose once every 24 hours. Recent research has concurrently administered isoniazid in a daily, single oral dose alongside Myambutol in this context. 

Side Effects 

Common Side Effects

While taking this medication, you may experience side effects such as:  

  • Headache 
  • Loss of appetite 
  • Upset stomach 
  • Nausea/vomiting  

If any of these effects persist or worsen, promptly inform your healthcare provider or pharmacist. 

Severe Side Effects

Keep in mind that your physician has prescribed this medication based on their assessment that the potential benefits to your health outweigh the associated risks of side effects. Notably, a significant portion of individuals using this medication do not encounter severe adverse effects. 

In the event that you encounter any serious side effects, notify your doctor without delay. These serious side effects may include: 

  • Changes in vision such as:  
    • Blurred 
    • Decreased vision 
    • Color blindness 
  • Symptoms of liver dysfunction such as:  
    • Persistent nausea/vomiting 
    • Unusual fatigue or weakness 
    • Severe stomach or abdominal pain 
    • Yellowing of the eyes or skin 
    • Darkened urine 
  • Tingling or numbness in the arms or legs 
  • Pain in the toes or joints 
  • Mental or mood disturbances (such as confusion or hallucinations) 
  • Indications of a new infection (such as a persistent sore throat or unrelenting fever)  
  • A propensity for easy bleeding or bruising 


Prior to initiating ethambutol therapy, communicate with your healthcare provider or pharmacist regarding any known allergies to ethambutol or other allergenic substances. This pharmaceutical formulation may encompass inactive components capable of eliciting allergic reactions or other adverse effects. For more comprehensive information, consult with your pharmacist. 

Furthermore, provide your healthcare provider or pharmacist with your complete medical history before commencing treatment, with particular attention to any preexisting eye conditions (such as optic neuritis, cataracts, or diabetic retinopathy), liver ailments, kidney disorders, or a history of alcohol consumption. 

Note that ethambutol may potentially compromise the efficacy of live bacterial vaccines, such as the typhoid vaccine. Consequently, notify your healthcare professional of your use of ethambutol prior to undergoing any immunizations or vaccinations. 

Additional information

Generic name:

Ethambutol, Ethambutol Hcl




100mg, 400mg

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Quality Prescription Drugs has provided information from third parties intended to increase awareness and does not contain all the information about Myambutol (Ethambutol). Talk to your doctor or a qualified medical practitioner for medical attention, advice, or if you have any concerns about Myambutol (Ethambutol).