Yogi Tea Organic infusion Natural defenses Ayurvedic herbal infusion Echinacea, acerola berries and elderberry 17 tea bags When the seasons change, our immune systems sometimes need a little boost. In addition to following a varied and balanced diet as part of a healthy lifestyle, its time to treat yourself to a cup of Yogi Tea® Natural Defenses herbal tea. The sweet and sour flavor of echinacea is accompanied by fruity elderberries and aromatic basil.