Cialis is the trade name and generic name of Tadalafil Tablets, and its 5mg/tablet size is therapeutic for men with erectile dysfunction and better meets individual variability. Tadalafil tablets are indicated for the treatment of erectile dysfunction in men. Tadalafil tablets are available in various sizes, including 5mg/tablet, which can be adjusted according to individual efficacy or tolerance, for example, it is generally recommended that most people start with 10mg, and then increase to 20mg or decrease to 5mg as appropriate, so this size of the drug can better meet the individual variability. The drug is contraindicated in people who are allergic to the drug, taking nitrates, or at potential risk of heart disease. Common adverse reactions after taking the drug are headache, dyspepsia, also seen eyelid swelling, eye pain, conjunctival congestion and other adverse reactions, usually mild to moderate, transient occurrence. The specific use of the drug should be under the guidance of a specialist, not unauthorized use of drugs.