Tadalafil tablets should not be taken after the expiration date. Any drug has a shelf life, within the shelf life can be taken, once the expiration date can not continue to take. After the expiration of tadalafil, first of all, the efficacy may change, such as the efficacy of the reduction, after taking the drug is not able to treat the disease well, can not achieve the expected results. Moreover, after the expiration date, the excipients of the drug may be deteriorated, which not only can’t treat the disease, but also may lead to some other undesirable phenomena, such as nausea, vomiting, diarrhea and other gastrointestinal symptoms. It is recommended that once tadalafil has expired, it should be thrown away in time and not be taken any further, and if there is any obvious adverse reaction after taking it, it is necessary to consult a doctor in time.