Time-extending sprays may have side effects such as allergies, erectile difficulties, and decreased erection hardness. The commonly used sprays for prolonging time in clinic are Dacronin spray and Lidocaine spray. These two drugs are local anesthetics, through local infiltration of anesthesia, to reduce penile sensitivity, to achieve the effect of prolonging sexual life. The spray to extend the time may cause some men to have an allergic reaction, and the time extension spray will reduce the sensitivity of the penis, reduce the external stimulation of the penis, which may affect the male’s erectile function, erection difficulties, hardness decline and so on. If you do not use a condom or cleaning medication during sex, it may have an effect such as anesthesia on the female vagina. If you need to use the spray to extend the time, it is recommended to apply it reasonably under the guidance of a professional doctor and follow the doctor’s instructions, so as not to cause physical discomfort.