It is impossible for your healthcare provider to know whether you will develop any sexual side effects while taking labetalol. If a person does develop sexual side effects, it is difficult to know whether these problems are caused by the labetalol or other factors.
However, if you develop any sexual side effects while taking labetalol, make sure to talk with your healthcare provider. He or she may be able to diagnose the cause of your symptoms. There are also treatments that he or she can recommend, such as an erectile dysfunction medication. If your symptoms continue to be bothersome, or if your healthcare provider believes the medicine is causing your sexual side effects, he or she may recommend trying another blood pressure medicine.