Side Effects of Finpecia

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Finasteride is a prescription medication for men used to treat difficulty urinating due to an enlarged prostate. Additionally, patients take Finasteride in order to reverse balding and stimulate new hair growth. Finasteride is commonly available under the brand name Propecia, but it is also known under a generic version called Finpecia. Despite its effectiveness, Finpecia is not for everyone as it presents several risks for side effects and complications in some patients.

Significant Side Effects

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The most significant or common side effects of Finpecia usually pose no longer term dangers. Approximately 8 percent of Finpecia users report impotence during the first year of treatment, making this the most common side effects of the drug. Decreases in libido and the volume of ejaculant are also common, occurring in at least 3 percent of users during the first year of treatment.

Types of Other Side Effects

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Finpecia also has the potential to cause a number of other less common, but not dangerous, side effects. Some men notice a feminine swelling of the breast or breast tenderness while taking Finpecia. Pain in the abdomen or back are also possible while using the drug. Neurological side effects like dizziness and headaches occur in some patients. It is also possible to develop diarrhea or testicular pain related to Finpecia usage.


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Though rare, Finpecia has the potential to cause allergic reactions in some patients. These side reactions range from minor itchy, skin rashes to more serious hypersensitivity responses. Some men develop large red skin welts known as uticaria while taking Finpecia. Angioedema or a swelling of the face, throat, hands and feet due to allergies are also possible while taking Finpecia. Infrequently, Finpecia causes anaphylaxis, a dangerous immune system reaction that results in rapid heart beat and shortness of breath. Rarely, anaphylaxis leads to shock or sudden death. If you experience any symptoms of an allergic reaction while taking Finpecia, seek prompt medical attention.


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Finpecia is only available for men; however, pregnant women need to exercise caution when handling the drug. While an intact tablet is harmless, Finpecia has the potential to cause serious hazards to a male baby if his mother handles a crushed pill while pregnant. Some of the risks posed by Finpecia are malformed genitals, decreased size of the prostate gland and deformed nipples. Since it is not known whether Finpecia is passed through breast milk, nursing mothers are also discouraged from handling the drug.


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Taking a combination of Finpecia and the herbal supplement St. John's Wort increases your risk of developing side effects. In your body, Finpecia is processed largely by the actions of your liver. Because of this, it may not be safe for you to take Finpecia if you have a history of liver cancer, cirrhosis, jaundice, hepatitis or any other condition that affects the functioning of your liver. Since it has the potential to cause dizziness, you should not operate a motor vehicle or heavy machinery until you know how Finpecia affects you.