Tadalafil tablets are not recommended for normal people, and need to have an indication to use the drug, the specific use of medication as prescribed by the doctor. Tadalafil tablets can treat erectile dysfunction in men and need to be contraindicated in people who are allergic to the product, people who have recently been using guanylate cyclase stimulators (e.g., leucovorin) as well as any form of nitrates, and people who are at risk of potential heart disease. Common adverse reactions after taking tadalafil tablets include influenza, nasopharyngitis, viral gastroenteritis, upper respiratory tract infections, dyspepsia, gastroesophageal reflux disease, back pain, myalgia, hypertension, and nasal congestion. The drug requires an indication to be used and is generally not recommended for normal people. The specific use of the drug should be carried out under the guidance of a specialist, and should not be used without authorization.