Ribavirin has been shown to produce high inter- and intra-subject pharmacokinetic variability following single oral doses (intrasubject variability of approximately 30% for both AUC and Cmax), which may be due to extensive first pass metabolism and transfer within and beyond the blood compartment.
Pärast ühekordse suukaudse annuse manustamist esinevad ribaviriini farmakokineetikas suured inter - ja intraindividuaalsed erinevused (nii AUC kui Cmax intraindividuaalne varieeruvus on ligikaudu 30%), mis võivad olla tingitud ulatuslikust esmasest maksapassaažist ja jaotumisest organismis.