Haemer, who also serves as an associate professor in the Department of Pediatrics/Section of Nutrition at the University of Colorado Anschutz Medical Campus, noted that price can be a barrier. The generic version of phentermine and topiramate can cost around $30 a month and GLP-1 agonists are upwards of $1,500 per month, he said. However, he noted that drug companies offer programs that will provide the medications at a discounted rate.