ZYANNA® appears to be a legitimate online store based on customer reviews. The company has a 4.3-star rating with 170 reviews on Trustpilot, with 62% of the reviews being 5-star. Customers have praised the quality of the tea and the customer service. Some reviews mention fast delivery and trustworthy payment systems. However, there are a few complaints about delayed deliveries and packaging issues. Overall, the majority of customers seem satisfied with their purchases from ZYANNA®.