Immunoglobulin treatment how long to see the effect is a certain individual differences, can not be generalized, its treatment time is about 3~5 days. The treatment time of immunoglobulin is about 3~5 days, some patients may have obvious effect after one day of application, some patients may have no effect even after two weeks of application. Patients who still have no effect after 5 days of application are advised to stop using the drug and be examined by a doctor before deciding whether to continue using it. The sensitivity of different individuals to the drug varies to some extent, and some patients may have a congenital intolerance to immunoglobulin, so the immunoglobulin injection may be ineffective. Immunoglobulin injection in the clinic is mainly used for the prevention of measles and infectious hepatitis, generally there is no obvious adverse reactions, a small number of people may appear after the injection of local redness, swelling and pain, generally do not need special treatment, the use of immunoglobulin allergy patients are prohibited. The use of immunoglobulin is recommended under the guidance of a professional physician, do not self-medication.