Tadalafil 5mg is a small dose, depending on the patient’s condition and the effect of the drug can be used every other day. Tadalafil is a drug used to treat erectile dysfunction in men, and 10mg is generally recommended for the first time. 10mg can rapidly increase the concentration of the drug in the body, and 5mg is used later to maintain the concentration of the drug in order to achieve the effect of treating erectile dysfunction. 5mg of tadalafil once a day is generally recommended to maintain drug concentration. However, if a patient experiences frequent erections with 5mg, in this case it can be used once every other day. Tadalafil is a prescription drug, which is more effective in treating erectile dysfunction, but it also has certain side effects, such as dizziness, headache, nausea, vomiting and other uncomfortable symptoms, which need to be used under the guidance of a professional doctor. Tadalafil is contraindicated for people who are allergic to any of the ingredients in this product, patients who are taking any form of nitrates, guanylate cyclase stimulators, women, children and other people.