RELATED: If You Do This Common Thing With Your Pills, Have Your Liver Checked Now. According to a 2013 study published in JAMA Internal Medicine, there’s a very good chance you’ve been throwing money away by mentioning brand-name drugs at your doctor’s office. “Approximately four of 10 physicians report that they sometimes or often prescribe a brand-name drug to a patient when a generic is available because the patient wanted it,” the researchers wrote. Often, patients will request or reference a particular drug because they’ve seen it advertised, and don’t know the name of its generic equivalent. This is not by chance, the study says. “Pharmaceutical companies aim to stimulate patients’ requests for brand-name medications and increase the likelihood physicians will honor such requests,” the researchers wrote. Unfortunately for unwitting consumers, this practice has major financial implications. Even if you’re insured, the cost hike can send your co-pay skyrocketing. The prevalence of brand-name drugs are “a huge source of wasteful spending that can be prevented,” Eric G. Campbell, Ph.D., professor of medicine at Harvard Medical School and co-author of the study told Harvard Health Publishing. The FDA lays bare the shocking price gap: “A single generic competitor can lead to price reductions of 30 percent, while five generics competing are associated with price drops of nearly 85 percent,” says the health authority. RELATED: If You Take This Common Medication to Sleep, Stop Now, New Study Says. Some patients may worry that by requesting a generic drug they will receive a substandard or less regulated product, but experts say this is patently false. Generic drugs are chemically identical to their brand-name counterparts, and differ only in packaging, presentation, and non-active ingredients. You can rest assured that by taking a generic, you’ll receive the same therapeutic effect.ae0fcc31ae342fd3a1346ebb1f342fcb “FDA-approved generic medicines work in the same way and provide the same clinical benefit and risks as their brand-name counterparts,” the FDA explains on its site. “A generic medicine is required to be the same as a brand-name medicine in dosage, safety, effectiveness, strength, stability, and quality, as well as in the way it is taken. Generic medicines also have the same risks and benefits as their brand-name counterparts,” the health authority adds. Campbell’s team found that 37 percent of doctors will prescribe a name-brand drug when a patient asks for it specifically. “Doctors are often evaluated on how satisfied their patients are—it’s easier to say yes than risk a negative evaluation. They tend to have packed schedules, and it takes less time to write the brand-name prescription than it does to explain why the generic will do just fine. And some are influenced, consciously or not, by their interactions with drug company representatives,” writes Harvard Health. In fact, the study’s findings on what influences a prescription may give you pause about accepting what the doctor ordered. “Doctors who took free drug samples, were paid for pharmaceutical company speaking or consulting, or received food, gifts, or travel reimbursement from a pharmaceutical company” were more likely to write a prescription for name-brand products, the study found. For more health news sent directly to your inbox, sign up for our daily newsletter. Just because your doctor has already written a name-brand prescription doesn’t mean you’re obligated to fill it with the name-brand version. “In most states, a doctor has to write ‘brand only’ on the prescription if he or she does not want you to have a generic,” explain the experts from Harvard Health. Talk to your doctor or pharmacist today for more information on how to safely save on your medication. RELATED: If You’re Over 60, Do Not Take This OTC Medication Every Day, Officials Say.