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Isoniazid is a prodrug that inhibits the formation of the mycobacterial cell wall. Isoniazid must be activated by KatG, a bacterial catalase-peroxidase enzyme in Mycobacterium tuberculosis. [53] KatG catalyzes the formation of the isonicotinic acyl radical, which spontaneously couples with NADH to form the nicotinoyl-NAD adduct.
Isoniazid/rifampicin, also known as isoniazid/rifampin, is a medication used to treat tuberculosis. [1] It is a fixed dose combination of isoniazid and rifampicin (rifampin). [1] It is used together with other antituberculosis medication. [1] It is taken by mouth. [1] It is on the World Health Organization's List of Essential Medicines. [2]
It combines isoniazid, pyridoxine, sulfamethoxazole, and trimethoprim. [1] Specifically it is used to prevent tuberculosis, toxoplasmosis, pneumonia, malaria, and isosporiasis. [2] It is taken by mouth. [1] Side effects may include trouble concentrating, numbness, vomiting, and rash. [2] Serious side effects may include liver problems. [2]
It is a fixed dose combination of ethambutol, isoniazid, pyrazinamide, and rifampicin. [1] It is used either alone or with other antituberculosis medication. [1] It is taken by mouth. [1] Side effects are those of the underlying medications. [1] Pyridoxine may be used to decrease the risk of numbness. [2]
The old dose for pyrazinamide was 40–70 mg/kg daily and the incidence of drug-induced hepatitis has fallen significantly since the recommended dose has been reduced to 12–30 mg/kg daily. In the standard four-drug regimen (isoniazid, rifampicin, pyrazinamide, ethambutol), pyrazinamide is the most common cause of drug-induced hepatitis. [13]
It is a fixed dose combination of rifampicin, isoniazid, and pyrazinamide. [1] It is used either by itself or along with other antituberculosis medication. [1] It is taken by mouth. [1] Side effects are those of the underlying medications. [1] These may include poor coordination, loss of appetite, nausea, joint pain, feeling tired, and numbness ...
It contains ethambutol, isoniazid, and rifampicin. [1] It is used either along or with other anti-tuberculosis medication. [1] It is taken by mouth. [1] Side effects are those of the underlying medications. [1] Use may not be suitable in children. [1] It is on the World Health Organization's List of Essential Medicines. [2]
In pharmacology, potency or biological potency [1] is a measure of a drug's biological activity expressed in terms of the dose required to produce a pharmacological effect of given intensity. [2]