Data fra det 4- årige klinisk studie, XENDOS, viste, at 60% af orlistatpatienterne og 35% af placebopatienterne tabte mindst 5% af deres udgangskropsvægt efter 12 ugers behandling.
Data from the 4-year XENDOS clinical trial showed that 60% of orlistat patients and 35% of placebo patients demonstrated a loss of at least 5% of their baseline body weight after 12 weeks of treatment.