Proper use of time delay sprays generally has no significant side effects on the human body. However, if you are allergic to the drug or use it improperly, it may lead to a decline in erectile function, sexual partner frigidity and other problems. 1. Allergy: some patients are allergic to time-lapse sprays, the use of glans itching, tingling, redness, swelling and even ulceration, this situation needs to be stopped in time, go to the hospital for examination and targeted treatment. 2. Erectile dysfunction: the use of too much delay spray may lead to glans anesthesia, glans to the outside world to reduce the stimulation and the emergence of temporary erectile difficulties. 3. Sexual partner frigidity: the glans surface of the delay spray into the female vagina may lead to the other side of the sexual pleasure is reduced or even lost, time will appear frigidity. Overall, the correct use of time-lapse sprays on the body generally no obvious harm. But if there is an allergy and other situations need to go to the hospital in time for targeted treatment.