The most effective way to improve your immune system is starting by healing your gut. 80% of our immunity lies in our gastrointestinal tract. The Immune Booster kit is the perfect combination of products that will help keep your immune system healthy and strong.• Our Super Juice Blend was carefully created to help improve GI health. • HB Zinc helps your immune system and metabolism. • Vi-Rid is formulated with well curated herbs to fight viruses.