You can get your flu shot too early! (September 2019) New data shows that timing does matter - you can get your flu shot too early! Flu vaccine starts to decline within weeks, so it's even more important to get your flu shot later in the season. PLUS- from September 23 thru November 23, participating Medicap Pharmacy locations will donate 12 meals to the local food pantry through their partnership with the Food Bank of Iowa. Come to participating Medicap locations this fall for your flu shot and together, we can help feed hungry Iowans!