Bests & Worsts Reviews from Amazon

Hello, I recently purchased 240 capsules of Nutricost Vitamin B12 Methylcobalamin at 2,000 mcg (delivered days ago, shipped and ordered via Amazon, sold by esupplements, as the vendor). I wanted to ask if there is any Carrageenan in this product. I realize it was not listed on the product label and/or description, but a customer review revealed they actually contacted staff at Nutricost and were told Carrageenan is an unlisted ingredient. The Amazon customer review further discloses they were informed by Nutricost that they would immediately list the undisclosed additive contained within this product, yet failed to follow through despite ample time and the inherent danger to customers unknowingly ingesting it. I’m rather new to taking extensive supplements and I feel rather unsafe, as I don’t know what to believe. I thought legally all ingredients had to be listed, even at the most basic level, simply to keep customers safe and protect the companies from legal ramifications and bad press (financial harm). Could you please help me understand this a bit more clearly? I definitely don’t want to ingest a product with unlisted ingredients, in this case, at a minimum, Carrageenan, as I’m trying to better my health. I’ve contacted the vendor eSupplements, Amazon, and obviously Nutricost about this matter, as of today. If Amazon keeps this product for sale, I implore them to post an immediate and highly visible warning to protect themselves and their customers from potential liability. I also caution to investigate the entire Nutricost line of supplements sold, as other potential legal ramifications are highly probable. Subsequently if this company maintains a pervasive disregard for truthful and complete ingredient listings on one product, why would they hesitate to repeat that behavior across the product line? Nutricost should have immediately responded to previous customer concerns, they should also answer their vendor eSupplements, and to Amazon, as they are risking all three businesses and their reputations for trustworthy health product sales. Customers must know the complete and accurate list of ingredients prior to ingesting these products, as we have a right to know exactly what is placed inside our bodies , so we can each make a responsible choice. It is 2021 and nobody should have to feel so unsafe trying to honestly navigate our own health.