How long does it take for the flu vaccine to work?
There is no exact answer for how long it takes for a flu vaccine to start working. The exact
time it takes for a vaccine to reach its full effect varies for every individual. However, it
generally takes about two weeks for your body to generate a sufficient amount of antibodies to
protect you from the flu. During the first two weeks after receiving your vaccine you are still
susceptible to the flu and it is still possible to catch the flu despite the flu vaccine.
If you're looking for more specific answers to specific questions, ask a Walgreens pharmacist here.
DISCLAIMER:
Answers to questions regarding information about medications or health conditions are not for
diagnostic or treatment purposes and are not conclusive as to the presence or absence of any
health condition. Consult your physician for diagnosis and treatment of your medical condition.
The information provided is not a substitute for medical advice. Advances in medicine may cause
this information to become outdated, invalid or subject to debate. Professional opinions and
interpretations of the scientific literature may vary. Walgreens' terms of use and general
warranty disclaimer apply to all services provided. If you are in need of immediate medical
attention, contact your physician, poison control center or emergency medical professional. If
you need to speak with a pharmacist for non-emergency matters, contact your local Walgreens
pharmacist or call a Walgreens.com pharmacist toll-free at 1 (877) 250-5823.
