Instruct: Classify an Amazon review into positive or negative sentiment.
Query: Not a good purchase

This product done nothing to enhance me in any way! It only gave me heartburn and made me lightheaded! Money badly spent! Dont waste yours. I ahve used other fotms of male enhancement before, such as Viagra and Cialis. Cialis being the better of the two by far! Although both products a little on the expensive side. I decided to try Viastat based on its price and its estimated success gaurantee! Unfortunately it did not live up to expectation in any form for me, and would not be interested in purchasing it again or any product from this company!!