How long does tetanus immunoglobulin tube last?

Tetanus immunoglobulin is a passive immune preparation against tetanus bacilli infection. It contains high titer tetanus specific antibody. It can neutralize the toxin released by tetanus bacilli infection in the shortest time after injection, thus preventing tetanus bacilli infection. Because tetanus immunoglobulin belongs to passive immune preparation, it can maintain effective action time in vivo is relatively short, most of them are about 2-3 weeks, the longest effective time will not exceed 4 weeks. Tetanus immunoglobulin is a passive immune preparation that can be reused. If necessary, it can be reused after an interval of 2-3 weeks without obvious adverse reactions.