Takashi Usami

9PUBLICATIONS
10CO-AUTHORS
Toxicology (incl. clinical toxicology)Clinical pharmacy and pharmacy practiceChild and adolescent developmentRespiratory diseasesMolecular medicine
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Publications (9)

|Mar 29, 2026
Clinical Characteristics of Over-The-Counter Drug Misusers in Psychiatric Practice in Japan: Comparison by Type of Drug Misused for the First Time.

Soichiro Omiya, Yuko Tanibuchi, Takashi Usami

|Feb 18, 2026
Clinical Characteristics of Over-The-Counter Drug Misusers in Psychiatric Practice in Japan: Comparison Between Codeine Misusers and Dextromethorphan Misusers.

Yuko Tanibuchi, Soichiro Omiya, Takashi Usami

|Dec 25, 2025
Clinical characteristics and treatment resource utilization among patients with substance use disorders: A comparative study of individuals who misuse pharmaceuticals and use illegal drugs.

Takashi Usami, Toshihiko Matsumoto, Kyoji Okita

|Dec 18, 2025
Deliberate self-harm in adolescents with OTC-related psychiatric disorders: A study of prevalence and associated factors.

Toshihiko Matsumoto, Takashi Usami, Akiho Nishimura

|Nov 10, 2025
A retrospective risk factor analysis in psychiatric inpatients with COVID-19 from 2020 to 2023 at a neuropsychiatric hospital in Tokyo.

Takuma Inagawa, Hajime Ariga, Hiroki Okano

|Sep 20, 2025
Clinical Characteristics of Patients With Cannabis-Related Mental Disorders and an Examination of Factors Influencing Their Access to Medical and Nonmedical Resources: Comparison of Methamphetamine-Related Mental Disorders.

Toshihiko Matsumoto, Takashi Usami, Akiho Nishimura

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Frequent Collaborators

5 joint publications

Takuya Shimane

5 joint publications

Toshihiko Matsumoto

3 joint publications

Yuko Tanibuchi

1 joint publications

Takako Enokida