
itraconazole oral brand names and other generic formulations include:
Onmel Oral, Sporanox Oral, Sporanox Pulsepak Oral
guanfacine oral brand names and other generic formulations include:
Intuniv ER Oral, Tenex Oral
itraconazole oral and guanfacine oral
itraconazole oral will increase the level or effect of guanfacine oral by altering drug metabolism. Blood levels of guanfacine may increase. The dose of extended release guanfacine should be reduced by half.
itraconazole oral and guanfacine oral
itraconazole oral will increase the level or effect of guanfacine oral by affecting hepatic/intestinal enzyme CYP3A4 metabolism. For extended-release (ER) guanfacine, if coadministered, decrease the guanfacine dosage to half of the recommended dose. Specific recommendations for immediate-release (IR) guanfacine are not available.
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Drug Interaction Categories
Contraindicated
Never use this combination of drugs because of high risk for dangerous interaction
Serious
Potential for serious interaction; regular monitoring by your doctor required or alternate medication may be needed
Significant
Potential for significant interaction (monitoring by your doctor is likely required)
Minor
Interaction is unlikely, minor, or nonsignificant