We designed the Merritt Immune Stack to take advantage of the latest information to help the immune system against various threats, and to combine five beneficial supplements into one combo pack. Selenium was used successfully in HIV positive patients to keep them from converting to AIDS, and seems to limit viral like disease. Higher Zinc levels were shown early in 2020 to be associated with better outcomes of COVID. Quercetin is an anti-inflammatory supplement which is on the published outpatient c-19 protocols. N-Acetyl Cysteine makes glutathione--a very potent anti-oxidant-- in the body and brain. NAC has been used IV to save lives, and is increasingly difficult to find in stores due to the realization of its importance to health. Fortunately, by buying in bulk and packaging in the Immune Stack we are able to source this for our customers. Betaine is a "methyl donor", and "methylation" is critical in keeping your DNA and nervous system healthy. Many people do not optimize this methylation process have been shown to be at more risk for cancer and neurologic conditions.