Lexapro (escitalopram) and Xanax (alprazolam) are medications primarily used to treat anxiety and depression. Weight changes can occur while taking these drugs, but they vary by individual. Lexapro is sometimes associated with weight gain, while Xanax may lead to weight loss in some users due to its sedative effects, which can suppress appetite. However, these medications can also affect metabolism and energy levels. It's essential to consult a healthcare professional before making any changes to medication or lifestyle for weight management, as individual responses to these drugs can differ significantly.