title: H2 receptor antagonists.
authors.forename: P S
authors.initials: PS
authors.lastname: Driver
mesh_terms: D000368:Aged; D006177:Gynecomastia / Q000139:chemically induced*; D006635:Histamine H2 Antagonists / Q000009:adverse effects*; D006801:Humans; D008297:Male; D011899:Ranitidine / Q000009:adverse effects*
chemical_list: D006635:Histamine H2 Antagonists; D011899:Ranitidine