Myambutol (Ethambutol Hydrochloride)

Ethambutol Hydrochloride, the active ingredient in Myambutol, is an antitubercular agent presented as a sterile powder for injection for intramuscular or intravenous use. It is employed in the treatment of active Mycobacterium tuberculosis infections in adults and children as part of combination therapy.

GNH USA supplies Myambutol as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, clinics and procurement agencies worldwide, with a focus on quality and regulatory compliance. The company maintains stringent manufacturing standards and provides reliable logistics for global distribution.

Ethambutol Hydrochloride is an antitubercular drug used in the management of Mycobacterium tuberculosis infection. - Pulmonary tuberculosis: contributes to bacterial killing as part of first‑line combination therapy. - Extrapulmonary tuberculosis: used alongside other agents to treat disseminated disease. - Multidrug‑resistant tuberculosis (as part of WHO‑recommended regimen): added to strengthen the regimen when susceptibility permits.

Ethambutol may cause a range of adverse reactions, varying from mild to severe.

Common Side Effects: - Visual disturbances: blurred vision or difficulty distinguishing colors, especially red‑green. - Optic neuritis: mild eye discomfort or reduced visual acuity. - Rash: mild skin erythema or itching. - Nausea and vomiting: gastrointestinal upset. - Peripheral neuropathy: tingling or numbness in extremities.

Serious or Rare Side Effects: - Severe optic neuritis: significant loss of vision requiring immediate discontinuation. - Hepatic toxicity: elevated liver enzymes or hepatitis. - Allergic reactions: urticaria, angioedema, or anaphylaxis. - Stevens‑Johnson syndrome: severe skin blistering and mucosal involvement.

When prescribing Ethambutol, clinicians should observe several safety considerations. - Visual monitoring: baseline and periodic eye examinations are recommended. - Renal function: adjust dose in patients with impaired renal clearance. - Hepatic status: use cautiously in pre‑existing liver disease. - Concomitant neurotoxic drugs: avoid combining with other agents that may increase neuropathy risk. - Pregnancy and lactation: use only if potential benefit outweighs unknown risks. - Store below 25°C: keep in original packaging, protect from moisture and light.

Ethambutol can interact with other medicines, affecting efficacy or safety.

Major Interactions (Avoid): - Isoniazid: increased risk of optic neuritis when used together. - Rifampicin: heightened hepatotoxic potential. - Streptomycin: additive neurotoxic effects.

Moderate Interactions (Monitor Closely): - Antacids (aluminum or magnesium): may reduce oral absorption if taken concurrently. - NSAIDs: potential for increased renal impairment. - HIV protease inhibitors: may alter plasma concentrations of Ethambutol.