Zinc: Zinc inhibits the reproduction of rhinovirus, and has been found to be especially good for treating viral sore throats. A recent study on the effectiveness of zinc showed that taking a zinc lozenge every 2-3 hours, shortened the duration of cold symptoms. Overdosing with zinc can have side effects, such as an effect on the uptake of iron.
Dosage: one lozenge every 2-3 hours for duration of the cold or flu. Keep in the mouth for 5-10 minutes. Or 30 to 50 milligrams a day.
Echinacea: Echinacea has powerful antiviral and immunity-boosting effects. It is used to rev up the immune system at the first sign of a cold. Echinacea has been found to work better before you get sick, to build up immunity. It has not been found as effective for treating a cold or flu.
Dosage: take daily according to manufacturers instructions. Take daily during the fall and winter months.
Garlic is great as a preventative and as a treatment. Take two tablets three times a day until the mucus production has slowed down dramatically, or until the color of mucus becomes clear rather than yellow or green. Garlic can also help treat ear infections. Squeeze a garlic clove until the juice runs into a cotton ball and place the cotton ball in the ear. Raw garlic has antifungal, antibacterial, and antiviral properties. Researchers in England found that garlic can speed up recovery from a cold and increase resistance. Study participants had half the number of colds and made a more rapid recovery.