Xie Aili is the trade name, generic name tadalafil tablets, take tadalafil tablets have no effect may be insufficient dosage, lack of sexual stimulation after using the drug, the time of using the drug is too short and so on. 1. insufficient dosage: tadalafil tablets is a kind of treatment of male erectile dysfunction drugs, can improve the phenomenon of penile weakness, but in the taking of drugs need to strictly follow the doctor’s instructions, taking the drug dose is insufficient, can not achieve the role of the treatment of the disease, so it will lead to the patient to eat tadalafil tablets have no effect. 2. lack of sexual stimulation: tadalafil tablets under normal circumstances need to be taken about 30 minutes before intercourse, and need to play the role of drugs through a certain sexual stimulation, lack of sexual stimulation is generally unable to achieve satisfactory results. 3. medication time is too short: the drug to play a therapeutic effect, need a certain amount of time, if the use of medication time is too short, the drug has not been in the body to play a therapeutic effect, there will also be a medication ineffective situation. If the drug is allergic to any component of the patient is prohibited, and can not be used for women, and suffering from myocardial infarction, unstable angina, and low blood pressure is prohibited, the use of drugs need to follow the doctor’s instructions. The most common adverse reactions are headache and dyspepsia. These reported adverse reactions are transient and generally mild or moderate, with gradual recovery after discontinuation of the drug. It is recommended that tadalafil tablets be taken as directed by a physician.