The most commonly reported undesirable effects were nausea and vomiting, occurring in 31% Parareg and 19% placebo treated patients, and 27% Parareg and 15% placebo treated patients, respectively.
Kõige sagedamini teatatud kõrvaltoimeteks olid iiveldus, mis esines 31% Parareg’ iga ravitud patsientidest ja 19% platseeboravi saanutest, ning oksendamine, mis esines vastavalt 27% ja 15%.