How long to take tadalafil to cure cannot be determined, but generally after taking the drug, 30 to 60 minutes to take effect. Tadalafil is a kind of drug for treating male erectile dysfunction, after taking the drug, sexual stimulation is needed to make the product effective, generally after taking the drug, 30 to 60 minutes to take effect, so at least 30 minutes before sex needs to be taken. But how long to take tadalafil can be cured, and can not be sure, and the existence of male erectile dysfunction is not necessarily purely rely on tadalafil can be cured, just can play a role in improving the role of the often need to match with other treatment methods. The drug must be taken by the doctor’s guidance, when taking tadalafil, pay attention to the drug ingredients allergic people can not take, after taking may appear dizziness, migraine, blurred vision, tachycardia and other adverse reactions, if the adverse reaction is more pronounced, need to consult a doctor in a timely manner.