With flu season upon us, boosting the immune system is imperative to avoid the virus. Yearly, lots of people are affected by the influenza virus. What is the best way to maintain a healthy immune system? To help strengthen the immune system and combat the flu, we've tailored this package specifically. There are many nutrients in this bundle that may help to improve the immune system in a natural way, including vitamin A drops, vitamin D+K 5000, Trizomal Glutathione (K122), Turmero Active (K75) and Zinc Zyme (Z03).