<![CDATA[This study examines how Indonesian tuberculosis (TB) posters construct health messages through multimodal resources. It analyzes five public health posters using Kress and van Leeuwen's visual grammar to explore representational, interactive, and compositional meanings. A qualitative Multimodal Discourse Analysis was applied to posters on TB symptoms, drug-resistant TB, treatment side effects, healthy lifestyles, and cough etiquette. The findings show that representational meanings depict TB through symptoms, treatment risks, and preventive practices using both narrative and conceptual processes. Interactive meanings are mainly realized through offer images, eye-level perspectives, medium social distance, and low-modality illustrations that make health information accessible, while the drug-resistant TB poster creates greater urgency through a more confrontational design. Compositionally, titles, icon clusters, color salience, and segmented framing organize information into clear and memorable messages. The study concludes that Indonesian TB posters function as effective multimodal tools that strengthen public understanding, treatment awareness, preventive behavior, and institutional trust.]]>
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