Sisu Cold & Flu Rescue - Formulated to boost immune health and lessen the severity and duration of cold and flu symptoms. Ester-C, andrographis, NAC (N-acetyl-L-cysteine), and echinacea work together to support lung, respiratory, and immune health. This antioxidant-rich Ester-C formula supports immune health during the immune-challenging months of cold and flu season. Clinical studies show that Ester-C increases vitamin C levels in the body for up to 24 hours. Cold & Flu Rescue with Ester-C is a natural alternative to over-the-counter drugs that simply suppress symptoms.

