Weight Loss

alli works by stopping some of the fat you eat from being absorbed. It's taken with meals as part of a reduced-calorie, lower-fat diet, and a pharmacist checks your answers to make sure it's suitable for you.

It isn't suitable if you're pregnant or breastfeeding, take ciclosporin or a blood thinner such as warfarin, or have certain gut or liver conditions. The questionnaire checks for these.