American Health Ester-C 1,000 mg with Citrus Bioflavonoids. Vitamin C can reduce cold symptoms, but you need to take a lot: 2,000–6,000 grams daily in divided doses. This nonacidic form may be better tolerated and absorbed. It’s also available in new 1000-mg effervescent packets.

Honorable Mention

Boiron Oscillococcinum. Taken at the first sign of illness, this homeopathic remedy may help with flu symptoms

Quantum Health Zinc Elderberry Lozenges. Keep these on hand: Zinc and elderberry may help ease and shorten cold and flu symptoms.

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