Instruct: Classify Amazon reviews into positive or negative sentiment
Query: BEWARE THE OILY SPOTTING

Read up on this product before you decide to buy it. I started off experimenting by taking Alli with both low fat and high fat foods to see how I would be affected. With low fat foods, you will be fine. I experienced only mild headaches and that was it. With high fat foods, I can tell you the "oily spotting" side effect IS REAL. The company isn't kidding about needing to wear a maxi-pad because of the amount of oily spotting. It's not just a droplet, and it's bright orange in color. It's gross and it will stain your clothing and your toilet. You really have to watch what you eat when you take this drug, but then again, that's the idea! Personally, I think I am going to stick to Green tea tablets.