Finasteride can cause side effects such as breast pain, breast hyperplasia, rash and impotence in severe cases during the medication, at this time, the drug should be stopped immediately and seek medical attention, symptomatic treatment, such as rashes can be used hormonal drugs glucocorticoid ointment and so on. Finasteride tablets is a kind of medication for prostate hyperplasia, can improve urinary flow, frequent urination and other discomforts, but during the use of medication, breast pain, breast hyperplasia, rash, impotence and other serious side effects, you should immediately stop the drug and seek medical attention, symptomatic treatment. For example, breast pain and breast hyperplasia can be relieved by stopping the drug, skin rash can be treated with hormonal ointment such as glucocorticoid ointment, or oral antihistamine such as cetirizine. Impotence can be treated without special treatment if it recovers after stopping the medication, but if it still exists after stopping the medication, it needs to be treated with medication such as sildenafil. Finasteride tablets are not suitable for women and children, allergic to the components of the product is prohibited. And the drug needs to be used under the guidance of a doctor.