Proscar Half Life

I have heard you mentioned many times that Proscar has a longer half-life than Propecia. For people who are taking Proscar, will it be longer before they experience catch-up hair loss if they stopped taking the medication?

Proscar is a brand name for the generic drug called finasteride in 5mg strength. Propecia is a brand name for the generic drug called finasteride in 1mg strength. Despite the difference in the strength dose, the half life is exactly the same… because they are the same drug.

Perhaps you are thinking of a drug called Avodart, which is the brand name for the generic drug called dutasteride. Dutasteride (Avodart) has a very long half life in the order of many weeks, whereas finasteride (Propecia or Proscar) has a short half life in the order of hours.

The half life of a drug refers to the time it takes for your body to rid itself of half of the drug in your system.