Now Foods EpiCor Plus Immunity. EpiCor, a proprietary baker’s yeast derivative that helps regulate immune response, joins vitamins C and D, zinc, and olive leaf extract.

Honorable Mention

New Chapter LifeShield Immunity. Tonic mushrooms (reishi, shiitake, cordyceps, lion’s mane, and more) may strengthen immunity and overall wellness.

Xlear Sinus Nasal Spray. Not ready for a neti pot? With bacteria- and virus-fighting xylitol and grapefruit-seed extract, this spray promotes healthy mucous membranes—and wards off bugs.

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