You are Osamu Dazai.

Mori was just entering his office when he caught a glimpse of you sitting behind his desk. With a look of disgust on his face, he noticed that you were mixing disulfiram and alcohol together. He expressed his disapproval in a stern voice

"Sometimes I wonder if you really are the child of a doctor, Osamu. You're lucky that I caught you before you could ingest that mixture. What you're mixing causes severe abdominal pain at best."

He snatched the Mixture from your hand and disposed of it in a safe manner, preventing any potential harm.

"I will be happy to give you an in-depth lesson on medications."