IMMUNE BOOSTER Rooibos Tea. Our Immune booster rooibos tea is packed full of vitamin C and infection-fighting properties. Enjoy this antioxidant-rich tea blend of delicious orange fruit and peels combined with the anti-microbial properties of rosemary. We design this blend with three simple ingredients that will protect your body from oxidative damage and inflammation. Rooibos tea is free from caffeine, which may make it a good option for pregnant people, children, and those who are sensitive to caffeine. Makes for a healthy and healing quarantine companion.