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Ethambutol (Myambutol)

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Ethambutol (generic name: ethambutol; brand names include: EMB / Etibi / Combutol / Mycobutol / Tibitol / Servambutol / Tibinil) belongs to a group of medicines called antitubercular agents. Ethambutol is used for the treatment of pulmonary tuberculosis, usually in combination with other antituberculosis medicines.

Other names for this medication:
Combutol, Etambutol, Myambutol, Rifafour, Rimstar

Similar Products:
Moxifloxacin, Streptomycin, Etibi, Rifadin, Rofact, Levaquin, Avelox, Mycobutin


Also known as:  Myambutol.


Ethambutol is a prescription medication used for the treatment of pulmonary tuberculosis. It is usually given in combination with other tuberculosis drugs, such as isoniazid, rifampicin and pyrazinamide.

This medication may be prescribed for other uses. Ask your doctor or pharmacist for more information.


Ethambutol should not be used alone, in initial treatment or in retreatment. Ethambutol should be administered on a once every 24-hour basis only. Absorption is not significantly altered by administration with food. Therapy, in general, should be continued until bacteriological conversion has become permanent and maximal clinical improvement has occurred.

Ethambutol is not recommended for use in pediatric patients under thirteen years of age since safe conditions for use have not been established.


If you take too much Ethambutol, call your local Poison Control Center or seek emergency medical attention right away.


Store at room temperature between 20 and 25 degrees C (68 and 77 degrees F) away from moisture and heat. Throw away any unused medicine after the expiration date. Keep out of the reach of children.

Side effects

The most common side effects associated with Ethambutol are:

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Side effect occurrence does not only depend on medication you are taking, but also on your overall health and other factors.


Ethambutol may cause decreased vision clearness, including vision loss. This effect may be related to the dose that you take and how long you take Ethambutol. It is usually reversible when Ethambutol is stopped. However, permanent blindness has been reported. Contact your doctor right away if you experience vision changes (eg, decreased vision clearness). Discuss any questions or concerns with your doctor.

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NO production is elevated among patients with HIV infection, especially so among HIV/TB coinfected, but declines significantly following 4 weeks of antitubercular therapy.

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Heater-cooler units manufactured by LivaNova prior to September 2014 and used during cardiopulmonary bypass have been linked to M. chimera, which causes a latent infection that may be activated and become disseminated in cases of immunosuppression related to steroid use.

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Compound 2b can be considered as a new drug candidate to continue its development against M. tuberculosis MDR strains.

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To determine the frequency and antimicrobial susceptibility pattern of extra-pulmonary tuberculosis in Rawalpindi.

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To test the hypothesis that HIV infection can modify the clinical characteristics of tuberculosis, 65 consecutive cases of tuberculosis in HIV-seropositive patients diagnosed in Barcelona (Spain) were compared with 65 HIV-seronegative controls matched for age and sex. Thirty of the 65 cases were accepted as AIDS cases (August 1987 Centers for Disease Control criteria) only because of the tuberculosis. Among the cases 54 (83%) were parenteral drug addicts and 88% were males. The tuberculosis was pulmonary or pleural in 62 controls (96%) but in only 25 cases (39%; P less than 0.0001). Lymph nodes were involved in 25 cases (39%) and in none of the controls (P less than 0.0001). Disseminated forms of tuberculosis were present in seven cases (11%) and in no controls (P less than 0.007). Bone, joints and central nervous system involvement were also significantly (P less than 0.05) more frequent in cases. The treatment (isoniazid and rifampin for 6 months plus ethambutol and pyrazinamide during the first 2 months) was always effective. One relapse was detected after a median follow-up of 55 months in cases and none in controls after a median follow-up of 43 months. Twenty-five cases (39%) and 14 controls (22%) developed mild or severe side effects related to the treatment (P less than 0.004). In conclusion, most of the HIV-infected patients with tuberculosis were drug addicts with extrapulmonary or disseminated forms. A short course of treatment (6 or 9 months) may be enough but side effects were frequent.

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The primary endpoint was sputum culture status at 2 mo of treatment.

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To measure the minimum inhibitory concentrations (MICs) of BCG Tokyo vaccine products for anti-tuberculosis drugs and assess vaccine safety in terms of drug susceptibility.

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To determine the frequency of tuberculous cervical lymphadenitis and to evaluate the diagnostic efficacy of microscopy and conventional Lowenstein Jensen (LJ) culture technique in the diagnosis of cervical lymphadenitis caused by M. tuberculosis (MTB) Study Design: A descriptive, cross-sectional study. Place and Duration of the Study: Department of Mycobacteriology, Public Health Laboratories Division, National Institute of Health, Islamabad, from January 2003 to December 2004.

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Three mycobacteria reference laboratories in the south-eastern part of Brazil.

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We describe the case of a 36-years-old male patient, originating from India, who presented with enlarged cervical lymph nodes and elevated liver chemistry tests. Histologically necrosing granulomas were observed in the lymph nodes, and PCR revealed DNA from mycobacterium tuberculosis. However, in the liver biopsy granulomatous hepatitis without central necrosis was seen. With a positive PCR for mycobacteria from liver tissue and no evidence for other hepatic diseases we started drug treatment with standard quadruple regimen consisting of isoniazid, rifampicin, ethambutol, and pyrazinamide. Five days after onset of therapy, liver chemistry tests rose 10-fold, forcing us to interrupt treatment. Gradual step-wise re-exposition with the same medication after return of liver chemistry tests to baseline was well tolerated without any further side effects. Liver involvement of tuberculosis can have many facets and may be treated by gradual dosing of standard drugs.

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Four cases of chronic granulomatous skin infections (two due to Sporothrix schenckii and two to Mycobacterium marinum) were treated primarily by the intermittent application of local hyperthermia. This treatment was initiated either because of intolerance to conventional iodide therapy for sporotrichosis or as interim therapy while awaiting diagnosis of the mycobacterial infections. The response indicated that the application of heat is a useful adjunct to the therapy of these infections. Our experience, and that of others, suggests that in some cases heat alone may be curative.

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ethambutol drug action 2015-08-23

The role of the lipid bilayer and the peptidoglycan of the mycobacterial cell wall in the permeation of beta-sitosterol into the cell and its transformation to androst-1-ene-3,17-dione (AD) and androsta-1,4-diene-3,17-dione (ADD) was studied. Specific inhibitors were used at concentrations affecting the biosynthesis of the assumed target structures, but causing only partial cell growth inhibition or exerting no effect on growth. m-Fluorophenylalanine and DL-norleucine which are known to disorganize the biosynthesis of amphipatic components of the outer layer of the lipid bilayer, used at concentrations 250 micrograms/ml and 400 micrograms/ml, respectively, increased the formation rate of AD+ADD from 0.3 (control) to 0.7 and 0.8 mg products/g dry weight/h. The disorganization of the underlying mycolyl-arabinogalactan structure by the action of the ethambutol at the concentration 40 Clindal 500 Mg Preco micrograms/ml, at which the cell growth was apparently not affected, caused the decrease of the product formation from 135 mg/l to 70 mg/l. In the presence of isoniazid (350 micrograms/ml) only trace amounts of AD accumulated during 48 hours of transformation indicating much lower activity than that of the intact cells. The most effective among the tested inhibitors of peptidoglycan synthesis were glycine (15 mg/ml) and vancomycin (150 micrograms/ml) which enhanced the transformation activity of the treated cells nearly three times. Increased transformation rate was also obtained by the action of colistin at concentrations ranging from 10 micrograms/ml to 15 micrograms/ml.

ethambutol drug rash 2016-08-22

TTP measured by an automated, standardized, commercially available culture system correlates with cfu determinations. EBA measured by TTP provides similar information to cfu counting, and is reproducible Fungsi Obat Mezatrin 250 Mg across sites and in different patient populations. These findings support replacing cfu counting with TTP as the primary measurement in EBA studies.

ethambutol and alcohol 2015-03-30

The aim of this study was to search for new drugs active against the Mycobacterium avium complex and to re-examine the activity of some conventional antituberculosis drugs against these species. This progress report describes the protocol and phases of in vitro experiments Remora Xds Review in a search which included 57 different compounds tested against numerous strains of M. avium clinical isolates. The preliminary screening and MIC determination of these drugs were conducted in 7H12 broth by the radiometric method (BACTEC system). Of the total of 57 drugs, 23 were discarded after preliminary screening and 17 after MIC determination. The remaining 17 drugs were considered sufficiently promising for more detailed in vitro studies. These, now in progress, include MIC determination by two additional methods (in broth by sampling and plating and in 7H11 agar plates), MBC determination and drug combination studies. The following drugs are currently undergoing these detailed studies: isoniazid, rifampin, rifabutine (ansamycin LM427), amikacin, streptomycin, ethambutol, ethionamide, cycloserine, clofazimine (CF), CF derivative B746, CF derivative B1865, ofloxacin, ciprofloxacin, cephalosporin BMY 28142, trimethoprim-sulfamethoxazole, spectinomycin derivative U6633F(B), and dihydromycoplanecin.

ethambutol 800 mg 2017-01-15

Dental surgeons Flagyl 1 Time Dose can play an important role in the diagnosis and early treatment of many systemic conditions and they should be aware of the signs and symptoms of tuberculosis, as this is now an increasingly common condition, particularly amongst the immigrant population.

ethambutol cost 400 mg 2016-03-10

Nocardia species are ubiquitous in natural environments and can cause nocardiosis. Trimethoprim-sulfamethoxazole has long been the monotherapy treatment of choice, but resistance to this treatment has recently emerged. In this study, we used microplate Alamar Blue assays to determine the antimicrobial susceptibility patterns of 65 standard Nocardia isolates, including 28 type strains and 20 clinical Nocardia isolates, to 32 antimicrobial agents, including 13 little studied drugs. Susceptibility to the most commonly used drug, trimethoprim-sulfamethoxazole, was observed in 98% of the isolates. Linezolid, meropenem, and amikacin were also highly effective, with 98%, 95%, and 90% susceptibility, respectively, among the isolates. The isolates showed a high percentage of resistance or nonsusceptibility to isoniazid, rifampicin, and ethambutol. For the remaining antimicrobials, resistance was species-specific among isolates and was observed in traditional drug pattern types. In addition, the antimicrobial susceptibility profiles of a variety of rarely encountered standard Nocardia species are reported, as are the results for rarely reported clinical antibiotics. We also provide a timely update of antimicrobial susceptibility patterns that includes three new drug pattern types. The data from this study provide information on antimicrobial activity against Truxa Levofloxacina 750 Mg Para Que Sirve specific Nocardia species and yield important clues for the optimization of species-specific Nocardia therapies.

ethambutol 250 mg 2016-12-14

A 36-year-old woman with a 1 1/2-year history of systemic lupus erythematosus was first seen in October 1984 with a six-month Azitrobac 500 Mg Yeast Infection history of several ulcerated and scarred lesions on the lower extremities. A biopsy specimen showed a granulomatous infiltrate of deep dermis and subcutaneous tissue. Over the next three weeks, the patient developed a violaceous, warm, indurated, tender, fluctuant lesion involving most of the left buttock. A culture showed a rapidly growing atypical acid-fast bacteria, which was later identified as Mycobacterium fortuitum. The patient was treated with surgical drainage of the left hip abscess, followed by a three-week treatment with doxycycline hyclate and amikacin sulfate. She was discharged while receiving oral doxycycline and ethambutol hydrochloride.

ethambutol 275 mg price 2015-01-01

Between September 2000 and August 2002, 899 pulmonary and 460 extra-pulmonary specimens from suspected cases of tuberculosis were examined. The radiometric BACTEC 460 TB system was used for culture and antimicrobial susceptibility testing. The Loxin Capsules

ethambutol drug study 2017-07-28

Apart from new anti-tuberculosis drug Amoxibeta 1000 Mg Op 14 development, another approach for tuberculosis (TB) treatment optimization is to derive maximum benefit from current agents. However, the dosage of current anti-TB drug regimens has never been optimized according to the exposure-effect relationships of each drug. The objective of this article is to review the latest pharmacokinetic, pharmacodynamic, experimental, and clinical data concerning the use of higher doses of first-line anti-TB drugs to improve the efficacy of pulmonary tuberculosis treatment. Exposure-effect relationships have been described for all first-line anti-TB agents. There is convincing evidence that patients would benefit from higher rifamycin exposure. This could be achieved by using higher daily doses of rifampin, or more frequent dosing of rifapentine. The dose-dependent activity of pyrazinamide observed in hollow-fiber and animal models suggests that higher doses of pyrazimamide might be more efficacious, but the tolerability of such higher doses needs to be investigated in humans. It is likely that higher doses of ethambutol would be associated with higher antibacterial effect, but the dose-related ocular toxicity of the drug precludes such practice. For isoniazid, dose individualization is required to optimize patient care. The use of higher than standard doses of isoniazid in fast acetylators should result in greater early bactericidal activity. To conclude, the use of higher doses for some of the firstline anti-TB agents has definite potential for shortening or improving TB treatment.

ethambutol 1600 mg 2017-10-10

A case was 56 years old woman, and she did not have any subjective symptom. She received multiphasic health screening, and abnormal shadow was detected on her Pseudomembranous Colitis Metronidazole Dosage chest radiograph. Chest radiography revealed infiltrations in the middle lobe. Computed tomography (CT) of the thorax showed clusters of small nodules in the middle lobe. The bronchial washing specimen showed acid-fast bacilli identified as Mycobacterium intracellulare by DNA-DNA hybridization (DDH) method. This case was diagnosed as Mycobacterium intracellulare lung disease. The patient received combination therapy with rifampicin, ethambutol, and clarithromycin for one year with radiological improvement. CT findings were characteristic and useful for the early diagnosis of MAC infection, which led to cure of the disease by chemotherapy.

ethambutol 500 mg 2017-12-02

Mutations at codons 306 and 406 of embB have a relevant Azifast 250 Mg role in resistance to ethambutol in our area. The LD-EMB array developed in this study would appear to be a good molecular test for rapid detection of ethambutol resistance.

side effects of ethambutol hcl 400 mg 2017-09-29

A patient with chronic myeloid leukemia (CML) who developed a disseminated infection by mycobacterium avium complex (MAC) was successfully treated with rifampin, ethambutol, isoniazid, cycloserin and ciprofloxacin. Diagnosis was proven by histologic examination of hepatic biopsy and culture of the liver biopsy material. Two years later the patient underwent allogeneic bone marrow transplantation (BMT) from an HLA-matched sibling donor. Antimycobacterial prophylaxis to MAC with ethambutol, cycloserin and ciprofloxacin was given throughout the immediate post-transplant period. On day +25 post-BMT secondary prophylaxis was changed to ciprofloxacin and clarithromycin due to hepatic toxicity. Treatment was maintained until day 100 without side effects. There was no evidence of recurrent mycobacteriosis. Eight months after BMT the patient is well, with a good performance status and chronic graft-versus-host disease (GVHD) limited to the oral mucosa. Thus, MAC infection prior to transplant need not be a contraindication to successful BMT.

ethambutol dose in renal failure 2015-03-14

The addition of clofazimine to a regimen of clarithromycin and ethambutol for MAC bacteremia in AIDS patients does not contribute to clinical response and is associated with higher mortality.