Cold or the flu

Colds and flu are often viral infections for which there is no cure. There are no drugs that can be taken as a preventative measure against the common cold.
While there are many over the counter drugs available to treat the symptoms of colds and flu, you are often just as well off taking herbal remedies, which have fewer side effects.
Echinacea - Studies have shown that this herb can shorten the duration and lessen the severity of a cold. It does this by helping to stimulate the body’s own production of anti-viral substances and helps enhance the body’s immune cells, helping it better fight off cold germs. Often available in capsule form, take 900 milligrams of Echinacea per day.
Astragalus - This Chinese herb has immune-boosting properties, and also has anti-viral properties. Take Astragalus throughout the cold and flu season to help bolster your immune system to avoid getting colds.
Commonly found in capsule form, take up to 3600 milligrams per day.
Elderberry - Elderberry has been found to have compounds that help fight the flu. Taken as soon as symptoms start, and continue taking it daily.
Commercially available as syrups and lozenges, these can be taken as directed on the package. It is also available as tea, tincture and in capsule form.
Garlic - Garlic helps boost the immune system and fights bacteria and yeast. You can eat garlic in foods, but during cold season it is helpful to take a garlic supplement. It is readily available in capsule form. Take up to 5,000 micrograms per day.
Vitamins - Vitamin C and Zinc are known to help lessen the duration of colds as well as help keep the symptoms down. Take supplements in capsule form or in lozenge form during cold season and especially with the onset of any symptoms.