👉 Psychoprophylaxis in medical terms refers to a method of preventing an adverse reaction or attack by administering drugs, vaccines, or other substances. It is often used to prevent serious illness or death from diseases that can be prevented through vaccination or other means. This practice has been widely used in the past and continues to be recommended for certain conditions such as measles, mumps, rubella (MMR), polio, diphtheria, tetanus, pertussis, varicella