Triguard Plus Colloidal Silver Nasal Spray. Colloidal Silver Water, Sambucus Elderberry Extract and Olive Leaf Extract are the key ingredients in Triguard Plus. Colloidal Silver is valued and used for over 2,000 years, silver has been utilized to help protect the safety and purity of drinking water throughout ancient Mediterranean civilizations. As a naturally occurring element, silver can be found in whole spring water, sea water, tap water, grains, edible and medicinal mushrooms. From ancient times through the first World War, silver was utilized to help heal wounds. Known to have effective properties, silver nitrate is still occasionally used in the eyes of newborn infants. Elderberry supports and helps clear the upper respiratory tract and builds immune function with health building antioxidants and minerals.* An excellent immune-enhancing tonic, Elderberry has chemical compounds called anthocyanidins, which are known to stimulate immune system function, and has many nutrients that help with everything from cardiovascular support to having healthier, clearer skin.* The antioxidants in Elderberry are free radical scavengers and the flavonoid components make this an excellent support for any need for your health.* Olive leaf extract is Widely respected as an immune strengthener and activator, and may help to maintain health during the winter season*. Has twice the antioxidant bioflavonoids of those in Green Tea Leaf (Camellia Sinensis). Olive leaves also contain naturally protective polyphenols, the most impactful being oleuropein which is known to help improve immune function and antioxidant protection.* Studies have shown that because of OLEs fatty acids it could help support the immune system