Examples: Cold-Fx; A.Vogel Echinaforce Sore Throat Spray; hydraSense Congestion Relief; Jamieson FluShield; Nature’s Harmony Zinc Lozenges with Vitamin C and Echinacea; Sisu Cold & Flu Rescue with Ester-C
How they work: “A combination of zinc and vitamin C (Nature’s Harmony) can be helpful with cold and flu symptoms if you take them as soon as you start feeling ill,” says Trevorrow. Vitamin C (in Nature’s Harmony and Sisu) also boosts immunity for a preventive effect, along with the ginseng in Cold-Fx, and echinacea in Jamieson’s FluShield and A.Vogel’s Echinaforce Sore Throat Spray. Saline irrigation systems such as hydraSense are sterile rinses that help decongest the nasal passages.
Need to know: Follow package directions. Avoid echinacea if you have arthritis, a progressive systemic disease or an autoimmune disorder, or if you are taking immunosuppressants. Cold-Fx should not be used by people with impaired liver or renal function, or by people who require blood thinners.