Propecia (finasteride) is a drug used to treat male pattern baldness. It works by preventing the conversion of testosterone to DHT (dihydrotestosterone), thought to be responsible for hair loss in men. Sometimes patients taking Propecia report loss of interest in sex, impotence, runny nose, skin rash, dizziness, weakness and abnormal ejaculation. While in most cases these mild side effects are likely to go away on their own, they can make some patients consider another method of treatment. Drug interactions are possible when taking Propecia simultaneously with other medicines. Inform your doctor about taking any other drugs prescribed by other doctors, over-the-counter medicine, herbal preparations, vitamins and minerals.
Along with taking Propecia you may be required to follow certain recommendations concerning your lifestyle and diet. There may be certain restrictions on food and beverages that you must observe to make sure the treatment is effective. In some people this medicine has been reported to cause dizziness when standing up too fast. If Propecia has a similar effect on you, it's recommended to stand up slowly to avoid falling and injuring yourself. Propecia can cause birth defects in unborn babies and pass into breast milk.