A urinary tract infection, a common, but easy to treat bacterial infection, causes millions of people each year to seek out medical attention. Urinary tract infections are generally treated with a course of antibiotics, but an exceedingly common alternative is to consume cranberry products. The main claim is that the consumption of cranberry products helps stop bacteria from sticking to the uroepithelial cells lining the bladder, aiding in the prevention of a urinary tract infection. This literature review examines four relevant studies on the effectiveness of cranberries for urinary tract infections. These studies include a 2007 review article on the bioactive compounds found in cranberries, a 2011 clinical trial of cranberries versus an antibiotic, a 2005 clinical trial of cranberry juice versus a placebo, and a 2008 systematic review by the Cochrane Collaboration. A critical evaluation of the literature finds that the consumption of cranberry products is effective in preventing urinary tract infections, but is no better than the standard treatment of antibiotics.