Before Your Flight: Take Zinc or Elderberry
Steel yourself for the war against pathogens! After you wake up from your restorative snooze, take an immunity-boosting zinc or elderberry gummy supplement before (we repeat, before!) leaving for the airport to give your immune system a boost in advance.
An Australian study from 2016 published in the journal Nutrients actually showed that travelers who took elderberry from 10 days before their travel overseas until four to five days after arriving at their destination experienced a shorter duration of the cold — if they got a cold at all — and had reduced cold symptoms. More researched is needed, but we're going with the more is more approach.
Try Zarbee's Naturals Elderberry Chews ($15). They have zinc and vitamin C loaded up in there, because convenience.