Instruct: Classify Amazon reviews into positive or negative sentiment
Query: no date for expiration or a production date

This product is too expensive and has no expiration or production date on it.I will buy other brands next time. It is just an asparagus extract from Chi's enterprise.Everything from them cost too much. I hope people will stop buying from them and they can reconsider the prices they put on the product with no production or expiration date on it.