I kliniske forsøg med VIRACEPT 250 mg tabletter, enten taget som 1250 mg to gange daglig eller 750 mg tre gange daglig, var den oftest rapporterede bivirkning (hos mere end 1 ud af 10 patienter) diarre.
In clinical trials with VIRACEPT 250 mg tablets, either taken as 1250 mg two times daily or 750 mg three times daily, diarrhoea was the most often reported side effect (likely to occur in more than 1 in 10 patients).