Vitamin C - This vitamin supports the function of various immune cells and enhances their ability to protect against infection. Vitamin C also functions as a powerful antioxidant, protecting against cell damage induced by oxidative stress, which occurs with the accumulation of reactive molecules known as free radicals. Oxidative stress can negatively affect immune health and is linked to numerous diseases. Supplementing with vitamin C has been shown to reduce the duration and severity of upper respiratory tract infections, including the common cold

Vitamin D - is essential for immune function. Healthy levels of this vitamin may help lower your risk of respiratory
 infections. Vitamin D enhances the pathogen-fighting effects of monocytes and macrophages — white blood cells that are important parts of your immune defense — and decreases inflammation, which helps promote immune response. In fact, low vitamin D levels are associated with an increased risk of upper respiratory tract infections, including influenza and allergic asthma

Magnesium (as Magnesium Oxide) - Supports nerve, muscle, heart and bone health.

Zinc - Is needed for immune cell development and communication and plays an important role in inflammatory response. Zinc may protect against respiratory tract infections like the common cold. Supplementing with zinc may be beneficial for those who are already sick.

Selenium - Is a mineral that’s essential for immune health. Research demonstrates that selenium supplements may enhance antiviral defense against influenza strains, including H1N1

Elderberry Fruit Extract (Sambucus nigra) - Black elderberry (Sambucus nigra), which has long been used to treat infections, is being researched for its effects on immune health. Elderberry extract demonstrates potent antibacterial and antiviral potential against bacterial pathogens responsible for upper respiratory tract infections and strains of the influenza virus. It has also been shown to enhance immune system response and may help shorten the duration and severity of colds, as well as reduce symptoms related to viral infections

Olive Leaf Extract (Standardized for 20% oleuropein) - Olive leaf extract comes from the leaves of an olive plant. It contains an active ingredient called oleuropein. This nutrient is thought to contribute to the anti-inflammatory and antioxidant properties of olive leaf.

Andrographis - This herb contains andrographolide, a terpenoid compound found to have antiviral effects against respiratory-disease-causing viruses, including enterovirus D68 and influenza A. It has been used to treat hepatitis, gastrointestinal tract and upper respiratory infections, fever, herpes, and a variety of other chronic and infectious diseases..

Kudzu Root Powder - Kudzu root is rich in total flavonoids and other biologically active ingredients. It has varying degrees of regulation on many aspects of the immune system. It has obvious regulatory effects on humoral immunity. It can be used to prevent oxidative damage to biofilms. Pueraria can enhance the uptake of carbon particles by the liver and spleen, which mainly eat carbon particles, and restore cellular immune function. Therefore, it can be used clinically to treat a variety of diseases such as low immune system function and insufficient human metabolic function. 8

Boneset 4:1 Extract (aerial parts) - Boneset has been shown to contain antiviral properties and strengthens the immune system by enhancing the secretion of interferon. Interferon belongs to the large class of proteins known as cytokines - molecules used for communication between cells to trigger the protective defenses of the immune system that help eradicate pathogens.

N-Acetyl-L-Cysteine- Along with two other amino acids — glutamine and glycine — NAC is needed to make and replenish glutathione. Glutathione is one of the body’s most important antioxidants, which helps neutralize free radicals that can damage cells and tissues in your body. It’s essential for immune health and fighting cellular damage. Some researchers believe it may even contribute to longevity.

Deodorized Garlic Bulb Powder- Garlic supplements have been shown to help prevent and reduce the severity of common illnesses like the flu and common cold and are known to boost the function of the immune system. Studies found that a daily garlic supplement reduced the number of colds by 63% compared to a placebo. The average length of cold symptoms was also reduced by 70%, from 5 days to just 1.5 days in the garlic group.

Turmeric Root Extract (95% curcuminoids) - Turmeric has shown promise for its ability to ease joint pain, stiffness, and inflammation. In addition, Curcumin appears to have immune-balancing properties that may be particularly helpful for those with chronic stress. Curcumin may help promote optimal immune responses through its prebiotic-like properties, omega-3 boosting ability, and cortisol-lowering effects.

Quercetin ( as Quercetin Dihydrate) - Acts as a powerful antioxidant, anti-inflammatory and allergy symptom reliever. Plus, it supports cardiovascular health because it lowers inflammation and oxidative stress.