Research
Mixed
Orlistat provides only marginal additional weight loss when used as a 'toolbox' option for participants who have lost less than 5% of their initial weight after 6 months of intensive lifestyle intervention.
If you are using orlistat, understand it is a supplementary tool, not a primary solution. It offers only marginal additional weight loss for those who have not yet achieved significant weight loss through lifestyle changes. Prioritize lifestyle adherence first.
GoodQualifiesHIGH confidence
The use of orlistat, during the second half of the year, increased weight loss only marginally in those ILI participants who had lost <5% of initial weight during the first 6 months and chose to take the medication thereafter as a toolbox option.
Why this rating
RCT data, but observational within the ILI group (not randomized to orlistat).
Source
One‐year Weight Losses in the Look AHEAD Study: Factors Associated With Success
Thomas A. Wadden et al. · Obesity · 2009
DOI 10.1038/oby.2008.637
rct · n=5145Cited 528×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
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