Why the study?
Does influenza vaccination alter theophylline levels or warfarin anticoagulation in elderly institutionalized individuals?
Does influenza vaccination alter theophylline levels or warfarin anticoagulation in elderly institutionalized individuals?
Influenza vaccination does not appear to significantly alter theophylline metabolism or warfarin anticoagulation in elderly patients, contradicting some previous reports.
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Supports safe co-administration without adjustment in elderly institutionalized patients; challenges prior reports but leaves open randomized confirmation.
Gomolin et al. (1985) studied this question.
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