PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 26995374-3 2016 Metoprolol is a beta-adrenergic receptor antagonist that is ineffective in younger patients, but may benefit older (>=40 years) VVS patients. Metoprolol 0-10 VVS Homo sapiens 131-134 26995374-4 2016 Given the limited therapeutic options, a placebo-controlled clinical trial of metoprolol for the prevention of VVS in older patients is needed. Metoprolol 78-88 VVS Homo sapiens 111-114 26995374-5 2016 STRUCTURE OF STUDY: The POST5 is a multicenter, international, randomized, placebo-controlled study of metoprolol in the prevention of VVS in patients >=40 years old. Metoprolol 103-113 VVS Homo sapiens 135-138 26995374-12 2016 IMPLICATIONS: This study will be the first adequately powered trial to determine whether metoprolol is effective in preventing VVS in patients >=40 years. Metoprolol 89-99 VVS Homo sapiens 127-130