Delay sprays generally contain surface anesthetic ingredients, clinically used mainly for the treatment of premature ejaculation caused by excessive sensitivity of the glans. Its main side effects are allergic reactions, excessive numbness of the glans, etc.. 1. Allergic reaction: people who are allergic to the components of the drug or people with allergies may have an allergic reaction when using it, which can be manifested as itching and rash, and in severe cases, blisters and erosion, or even anaphylactic shock. 2. Excessive numbness: Using too large a dose may lead to excessive numbness of the glans, lack of sexual pleasure, difficulty in ejaculation, and in severe cases, erectile difficulties. It should be noted that minors under 18 years of age are prohibited from using, and must use a condom for sexual intercourse after using the drug, otherwise it is easy to cause the drug to be absorbed through the vagina, causing vaginal numbness, lack of sexual pleasure in women. Patients in the use of time-lapse sprays, should first consult a specialist physician, do not use drugs indiscriminately, so as not to cause adverse consequences.