title: Acid-blockers may increase pneumonia risk.
mesh_terms: D000897:Anti-Ulcer Agents / Q000009:adverse effects*; D006635:Histamine H2 Antagonists / Q000009:adverse effects*; D006801:Humans; D011014:Pneumonia / Q000139:chemically induced*
chemical_list: D000897:Anti-Ulcer Agents; D006635:Histamine H2 Antagonists