Instruct: Classify a review into positive or negative sentiment.
Query: surprisingly works very well!

i've had heartburn for a few years, and after using this (not every day but every day i can remember I would take one), my heartburn seemed to fade off. I've taken other anti-heartburn meds before, but moreso short-term, immediate stuff like tums, and rancidine. This worked exactly as described on the box. Ultimately, I need to lose weight which will drastically reduce heartburn as I age, but until I get there, this does the trick.