For HCV/HIV co-infected patients receiving Rebetol in combination with peginterferon alfa-2b, other undesirable effects (that were not reported in mono-infected patients) which have been reported in the studies with a frequency > 5% were: oral candidiasis (14%), lipodystrophy acquired (13%), CD4 lymphocytes decreased (8%), appetite decreased (8%), gamma-glutamyltransferase increased (9%),