Learn about finasteride (Propecia) usage and dosing. Read the latest news and reviews about the drug as well as potential side effects and popular alternatives. Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Propecia (finasteride) is used for the treatment of male pattern hair loss (androgenic alopecia) in men. Includes Propecia side effects, interactions and indications. Propecia does have potential side effects, including sexual dysfunction, psychiatric disorders and pain. According to the FDA’s Adverse Event Reporting System (FAERS), the most commonly reported Propecia side effects are erectile and sexual dysfunction, depression, anxiety and decreased libido. Side effects of finasteride, sold as Propecia or Proscar, may cause erectile dysfunction and decreased sex drive in men. Here are six side effects to know. Common side effects of Propecia include breast enlargement, decreased sex drive, erectile dysfunction, and ejaculation disorders. Serious side effects of Propecia include increased risk of high-grade prostate cancer and male breast cancer. What are the side effects of Propecia? A 2020 report points out that a finasteride patient noticed mood swings and sexual dysfunction, including low libido, difficulty achieving an orgasm, and. Our Propecia (finasteride) Side Effects Drug Center provides a comprehensive view of available drug information on the potential side effects when taking this medication. What are the serious side effects of finasteride? While less common, the most serious side effects of finasteride are described below, along with what to do if they happen. Learn about the side effects of Propecia (finasteride), from common to rare, for consumers and healthcare professionals.