This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Mood Disorders, Subject name: Psychiatry
Depression is not caused by: 
Select and explain. 
A. Clonazepam, B. methyldopa, C. Metformin, D. Coicosteroid
C: Metformin
Answer: C: Metformin 
Explanation: Drugs that cause depression as side effects- Antihypeensives like reserpine,methyldopa,beta blockers Steroids(OCPs and coicosteroids)- Progesterone> estrogen Interferons Barbiturates BZD