Tadalafil does not usually affect pregnancy and childbirth. Tadalafil is mainly used to treat erectile dysfunction in men, and it needs to be used under sexual stimulation to be effective. This product cannot be applied to women, so it will not affect pregnancy and childbirth. Common adverse reactions are headache, dyspepsia, muscle pain, generalized weakness, some individual patients may cause myocardial infarction, upright hypotension, palpitations (rapid heartbeat, often accompanied by panic), tachycardia, nausea, vomiting and other symptoms, and some may have allergic reactions such as itching and rash. It should be noted that the use of the drug is prohibited for patients who are allergic to the drug and taking nitrates, and should be used with caution in patients with heart disease. There is a need for medication needs to first find a doctor to check, under the guidance of the doctor to use, can not blindly take the drug themselves.