VORICONAZOLE

The pharmacokinetics of voriconazole has been characterized in healthy subjects, special populations and patients. The pharmacokinetics of voriconazole are non-linear due to saturation of its metabolism. The interindividual variability of voriconazole pharmacokinetics is high. Greater than proportional increase in exposure is observed with increasing dose. It is estimated that, on average, increasing the oral dose from 200 mg every 12 hours to 300 mg every 12 hours leads to an approximately 2.5-...

Voriconazole administered orally or parenterally, has been evaluated as primary or salvage therapy in 520 patients aged 12 years and older with infections caused by Aspergillus spp., Fusarium spp., and Scedosporium spp. 14.1 Invasive Aspergillosis (IA) Voriconazole was studied in patients for primary therapy of IA (randomized, controlled study 307/602), for primary and salvage therapy of aspergillosis (non-comparative study 304) and for treatment of patients with IA who were refractory to, or intolerant of, other antifungal therapy (non-comparative study 309/604). Study 307/602 – Primary Thera...

The following serious adverse reactions are described elsewhere in the labeling: Hepatic Toxicity [see Warnings and Precautions ( 5.1 )] Arrhythmias and QT Prolongation [see Warnings and Precautions ( 5.2 )] Visual Disturbances [see Warnings and Precautions ( 5.4 )] Severe Cutaneous Adverse Reactions [see Warnings and Precautions ( 5.5 )] Photosensitivity [see Warnings and Precautions ( 5.6 )] Renal Toxicity [see Warnings and Precautions ( 5.7 )] Adult Patients: The most common adverse reactions...

Voriconazole tablets are contraindicated in patients with known hypersensitivity to voriconazole or its excipients. There is no information regarding cross-sensitivity between voriconazole and other azole antifungal agents. Caution should be used when prescribing voriconazole tablets to patients with hypersensitivity to other azoles. Coadministration of pimozide, quinidine or ivabradine with voric...

Hepatic Toxicity : Serious hepatic reactions reported. Evaluate liver function tests at start of and during voriconazole therapy ( 5.1 ) Arrhythmias and QT Prolongation : Correct potassium, magnesium and calcium prior to use; caution patients with proarrhythmic conditions ( 5.2 ) Visual Disturbances (including optic neuritis and papilledema): Monitor visual function if treatment continues beyond 28 days ( 5.4 ) Severe Cutaneous Adverse Reactions : Discontinue for exfoliative cutaneous reactions ...

7 DRUG INTERACTIONS Voriconazole is metabolized by cytochrome P450 isoenzymes, CYP2C19, CYP2C9, and CYP3A4. Therefore, inhibitors or inducers of these isoenzymes may increase or decrease voriconazole plasma concentrations, respectively. Voriconazole is a strong inhibitor of CYP3A4, and also inhibits CYP2C19 and CYP2C9. Therefore, voriconazole may increase the plasma concentrations of substances me...