Health warnings on packets of cigarettes are to be enlarged to cover 85% of the packaging.
The regulation is at the drafting stage but will be implemented soon, Public Health Minister Pradit Sintanawarong said on Sunday.
By law, cigarette packets must carry photographs of smoking-related diseases and textual warnings. The current regulation demands a minimum of 55% of the packet be taken up with health warnings.
Dr Pradit said boosting that to 85% will mean Thailand has the biggest cigarette packet warnings in the world.
Currently, the largest are in Australia, which imposes a minimum 82.5% requirement. All marketing and brand devices are disallowed from the package and replaced with warnings, only the name of the product remains in generic standard sized text.