You can only use orlistat if a doctor or pharmacist thinks it's the right medicine for you. In most cases, orlistat is only available on prescription. Only one product (Alli) is available over the counter directly from pharmacies, under the supervision of a pharmacist.
Orlistat works by preventing around a third of the fat from the food you eat being absorbed. The undigested fat isn't absorbed into your body and is passed out with your faeces (stools). This will help you avoid gaining weight, but won't necessarily cause you to lose weight.
A balanced diet and exercise programme should be started before beginning treatment with orlistat, and you should continue this programme during treatment and after you stop taking orlistat.
It was prescribed as two heavy duty (high gram dose) capsules labelled Xenical/Orlistat taken ?3xdaily