Do Antibiotics Affect The Flu Shot


Asked by Mary

Do Antibiotics Affect The Flu Shot

I had the flu shot 5 days before starting a course of Floxapen (500mg x 4 a day for 7 days). Are these antibiotics likely to lessen the effectiveness of the flu jab


Not at all. The flu shot and your antibiotics treatment are attacking two different problems; one is alerting your immune system to a possible viral threat in the future and the other is searching out and destroying bacteria. Virus and bacteria two very different kinds of organisms; attacking one shouldn't have any effect on the other.

Plus the flu shot was well integrated into your immune system well before you started the course of antibiotics.