Koichi Masuyama

Tokyo, Japan

Last Updated: 09/26/2026

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Found 10 publications

Drug-drug interactions between sex hormones and analgesics linked to thromboembolic events: an FDA adverse event reporting system analysis.

Drug-drug interactions between sex hormones and analgesics linked to thromboembolic events: an FDA adverse event reporting system analysis.

Journal: Frontiers in pharmacology

Published: January 19, 2026

Differences in Approved Doses and Drug Lag in Drugs Approved between 2012 and 2021: A Comparison between Japan and the U.S.

Differences in Approved Doses and Drug Lag in Drugs Approved between 2012 and 2021: A Comparison between Japan and the U.S.

Journal: Biological & pharmaceutical bulletin

Published: August 27, 2025

Comparative analysis of the characteristics and trends of adverse drug reaction reports from patients in Japan and the Japanese Adverse Drug Event Report database.

Comparative analysis of the characteristics and trends of adverse drug reaction reports from patients in Japan and the Japanese Adverse Drug Event Report database.

Journal: British journal of clinical pharmacology

Published: June 12, 2025

Status of Community Pharmacy Functions and Regional Medical Collaboration System Initiatives in Japan.

Status of Community Pharmacy Functions and Regional Medical Collaboration System Initiatives in Japan.

Journal: Biological & pharmaceutical bulletin

Published: December 22, 2024

Changes in the trend and quality of adverse drug reaction reports in the Japanese Adverse Drug Event Report database and the impact of COVID-19-related reports.

Changes in the trend and quality of adverse drug reaction reports in the Japanese Adverse Drug Event Report database and the impact of COVID-19-related reports.

Journal: The International journal of pharmacy practice

Published: May 03, 2024

Progressive multifocal leukoencephalopathy reports in rheumatoid arthritis concerning different treatment patterns-an exploratory assessment using the food and drug administration adverse event reporting system.

Progressive multifocal leukoencephalopathy reports in rheumatoid arthritis concerning different treatment patterns-an exploratory assessment using the food and drug administration adverse event reporting system.

Journal: Frontiers in drug safety and regulation

Published: November 07, 2023

Drug-drug interaction assessment based on a large-scale spontaneous reporting system for hepato- and renal-toxicity, and thrombocytopenia with concomitant low-dose methotrexate and analgesics use.

Drug-drug interaction assessment based on a large-scale spontaneous reporting system for hepato- and renal-toxicity, and thrombocytopenia with concomitant low-dose methotrexate and analgesics use.

Journal: BMC pharmacology & toxicology

Published: July 27, 2023

Methotrexate-related adverse events and impact of concomitant treatment with folic acid and tumor necrosis factor-alpha inhibitors: An assessment using the FDA adverse event reporting system.

Methotrexate-related adverse events and impact of concomitant treatment with folic acid and tumor necrosis factor-alpha inhibitors: An assessment using the FDA adverse event reporting system.

Journal: Frontiers in pharmacology

Published: August 29, 2022

The association between concerns toward adverse reactions during pre-approval drug reviews and the post-approval addition of clinically significant adverse reactions to package inserts: A retrospective analysis of pre-approval drug review reports and safety updates.

The association between concerns toward adverse reactions during pre-approval drug reviews and the post-approval addition of clinically significant adverse reactions to package inserts: A retrospective analysis of pre-approval drug review reports and safety updates.

Journal: Pharmacoepidemiology and drug safety

Published: April 22, 2018

Pharmaceuticals and Medical Devices Agency (PMDA)'s new action for Pharmaceutical Affairs Consultation on Research and Development (R&D) Strategy

Pharmaceuticals and Medical Devices Agency (PMDA)'s new action for Pharmaceutical Affairs Consultation on Research and Development (R&D) Strategy

Journal: Yakugaku zasshi : Journal of the Pharmaceutical Society of Japan

Published: February 02, 2013

Showing 1-10 of 10

Last Updated: 09/26/2026