* wild [[asparagus]], desert date, false daisy, curry tree, castor oil plant and fenugreek are natural weapons in fighting life-threatening secondary infections from bacteria and fungi that afflict many cancer patients whose immune systems are damaged by mainstream medicine's chemo and radiation treatments.
* [[Astragalus]] offers benefits in preventing viral infections due to its immunostimulant effects, according to the Huntington College of Health Sciences.
* [[ElderberriesElderberry]] have antiviral properties, especially against different strains of influenza virus : In 1995, Elderberry juice was used to treat a flu epidemic in Panama. Scientists even used these powerful berries to help treat AIDS and cancer and "one study suggested that elderberry could kill the H1N1 virus."
* Black [[walnut]] is a natural herb which contains tannins that not only kill fungal overgrowth like candida, but also kill parasites. It may be especially useful for those who suffer from both [[candidiasis]] and a parasitical infection.
* [[Grapefruit seed extract]] (GSE): this citrus extract is a powerful natural antibiotic and is used to inhibit microbes, parasites, bacteria, viruses and 30 types of fungi including Candida yeast.