https://pmc.ncbi.nlm.nih.gov/articles/PMC5023004/

>Currently, there is no direct link between 5ARI use and depression; however, several small studies have led depression to be listed as a 15. side effect on the medication packaging.
>Sexual adverse effects, such as decreased libido, erectile dysfunction, and decreased ejaculate, have been reported in as many as 3.4 16. to 15.8 percent of men. Fortunately the effects are usually mild, with large studies suggesting the symptoms improve over time.

No link between finasteride and depression, minor sexual side effects for some men

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