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- Echinacea use reduces the incidence and duration of the common cold.
- Echinacea appears effective in preventing upper respiratory tract infections in children.
- Treatment with Echinacea Plus tea at early onset of cold or flu symptoms was effective for relieving these symptoms in a shorter period of time than a placebo.
- A yeast-based fermentation byproduct reduces cold and flu incidence in non-vaccinated individuals.
- A yeast-based fermentation byproduct reduces cold and flu symptom duration and severity.
- Daily dietary probiotic supplementation oor 6 months is a safe and effective way to reduce fever, rhinorrhea, and cough incidence and duration and antibiotic prescription incidence, as well as the number of missed school days for children 3-5 years of age
- Long term use of probiotics and synbiotics reduce the incidence and severity of respiratory diseases during the cold season.
- Probiotic bacteria reduce the duration and severity of common cold episodes.
- American Ginseng is safe and effective in reducing relative risk and duration of respiratory symptoms associated with "cold and flu" in adults.
- American ginseng is safe, well tolerated, and potentially effective for preventing acute respiratory illness due to influenza and respiratory syncytial virus infections.
- Elderberry appears to be safe and effective treatment for influenza A and B.
- Elderberry significantly reduces the duration of infection from influenza in a safe manner.
- Green tea is safe and effective in preventing cold and flu symptoms, and for enhancing T cell function.
- Green tea consumption is inversely associated with the incidence of influenza among Japanese schoolchldren.
- Vitamin D deficiency is associated with susceptibility to influenza.
- An herbal preparation containing echinacea, propolis, and vitamin C in preventing respiratory tract infections in children.
- There is evidence that vitamin C may reduce susceptibility to the common cold.
- Pelargonium sidoides is a safe and effective treatment for the common cold
- A Pelargonium sidoides extract has broad antiviral activity against respiratory viruses.
- Homeopathic preparation has therapeutic value in the treatment of influenza-like syndromes.
- Homoeopathic Oscillococcinum appears to have therapeutic value in influenza and influenza-like syndromes.
- Zinc lozenges may provide an effective treatment for the common cold.
- Zinc may inhibit influenza virus.
- A combination of fruit and vegetable powder extract reduces symptoms associated with the common cold.
- An extract of Baptisa (Wild Indigo), echinacea and thuja is safe and effective in the treatment of upper respiratory infections.
- Consumption of yoghurt fermented with L. bulgaricus reduced the risk of catching the common cold in elderly individuals.
- Chinese skullcap has significant anti-viral activity against Influenza.
- Cordyceps contains a polysaccharide that has beneficial therapeutic effects on influenza A virus.
- Andrographis has therapeutic activity against upper respiratory tract infections.
- Lactobacillus gasseri, Bifidobacterium longum and Bifidobacterium bifidum significantly shortens common cold episodes and reduces the severity of symptoms.
- Beet extract protects against experimental influenza infection.
- Cinnamon has antiviral activity against various influenza viruses.
- Horseradish extract attenuates influenza infection (in mice).
- Pomegranates have anti-influenza activity.
- Selenium supplementation may provide a feasible approach to improving the immune response to viral infections.
- Apple pectin, citrus pectin, flaxseed mucilage, gum acacia (gum arabic), and gum myrrh inhibit viral hemagglutinin in vitro.
- Agrimony (A. pilosa) has broad spectrum antiviral activity against Influenzas A, B and Avian Influenza.
- Black Tea inhibits influenza virus.
- Cranberry juice constituents inhibit influenza virus adhesion and infectivity.
- A water extract of dandelion exhibits anti-influenza activity.
- Maitake mushroom appears to induce the production of certain factors, including TNF-alpha, which are responsible for the inhibition of viral growth in vitro.
- Mullein contains antiviral compounds.
- Red Marine Algae exhibits strong HSV and Influenza-inhibiting activity.
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