Tadalafil 5mg means that one tablet of tadalafil has a size of 5mg and cannot be taken twice a day. Tadalafil is a kind of drug that can be used to treat erectile dysfunction, in addition, erectile dysfunction in the combination of benign prostatic hyperplasia can also take the drug for treatment, clinically used specifications include 2.5mg, 5mg, 10mg, 20mg. the relevant patients can follow the doctor’s instructions reasonable oral tadalafil for treatment, but no matter what specification of the drug, the number of times per day to take the drug is once. The number of doses is one per day, regardless of the size of the drug. Studies have shown that tadalafil 5mg may cause adverse reactions such as headache, dyspepsia, back pain, flushing, nasal congestion, and myalgia. It needs to be contraindicated for those who are allergic to any of the ingredients contained in Tadalafil. Children and women should not use the drug. Tadalafil is contraindicated in people who take nitrates and those who are using guanylate cyclase stimulators. Before using tadalafil, it is necessary to consider the patient’s cardiovascular health, and if angina develops after taking the drug, it is important to seek immediate medical attention. If vision loss or hearing abnormalities occur suddenly after taking the drug, it is recommended that the drug be discontinued and appropriate treatment be instituted. Individuals should not abuse tadalafil and should follow the doctor’s instructions to use the drug in a scientific and reasonable manner. If there is any abnormality in the body after using the drug, consult a physician promptly.