"Siberian Green" appears to be a legitimate company with a variety of products available. The company has received positive reviews on various platforms. On Amazon, the "Siberian Green 28 Organic Superfoods Supplement" has a mix of reviews, with a significant number of 5-star ratings. Another product, "Siberian Green 6 Super Probiotics," also has a good number of positive reviews. Additionally, customers from the United States and Australia have given high ratings to the company on Judge.me. However, as with any purchase, it's always a good idea to do thorough research and read reviews before making a decision.