Those drugs have well known risks of causing gynecomastia in some men. This is a well recognized side effect of their use.
For Gynecomastia - Does Propecia/ Proscar/ Finesteride Cause Breast Tissue Growth or Fat Increase on Breast?
Doctor Answers (2)
Propecia (Finasteride) and Gynecomastia
These answers are for educational purposes and should not be relied upon as a substitute for medical advice you may receive from your physician. If you have a medical emergency, please call 911. These answers do not constitute or initiate a patient/doctor relationship.