Finasteride and dutasteride belong to a class of medications called 5-alpha reductase inhibitors, or 5-ARIs. They prevent the conversion of testosterone into a different type of androgen hormone ...

Among those using finasteride for hair loss, before and after photos tell a compelling story, with clear visual evidence of a gradual increase in the thickness of hair as dormant follicles regrow ...

But keep in mind this is a much higher dosage of finasteride than the typical 1-milligram dose. The risk comes with the entire class of 5-alpha reductase inhibitor (5-ARI) drugs. Known by the ...