Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Seems to be "clearing" the cobwebs out of my head.

This product was recommended to me to help me with retention in my studies. As I was warned, the taste is somewhat like sucking on a penny, but it dissipates quickly. I take it in conjunction with Primetam and Omega-3s. The product is always delivered promptly and in good order. No complaints.