For the study, researchers randomly assigned roughly 1,700 adults with type 2 diabetes to take one of two doses of the new GLP-1 pill, orforglipron, or one of two doses of oral semaglutide. Oral semaglutide for diabetes is currently available under the brand name Rybelsus, and is sometimes referred to as Ozempic in a pill.
At the start of the study, all participants were struggling to manage their diabetes, with an average blood sugar A1C level of 8.3 percent.
After one year, participants taking the higher orforglipron dose saw their A1C levels drop by an average of 1.9 percent, according to results reported by drugmaker Eli Lilly. With the higher dose of oral semaglutide, A1C levels dropped by 1.5 percent.
Additionally, at the beginning of the study, the average participant weighed 214 pounds. By the end, people on the higher orforglipron dose lost almost 18 pounds, or about 8 percent of their starting weight. People on the higher dose of oral semaglutide lost less — 11.5 pounds on average, or a little more than 5 percent of their starting weight.
“So on efficacy alone, orforglipron looks better,” says Osama Hamdy, MD, PhD, an associate professor at Harvard Medical School and medical director of the Obesity Clinical Program at the Joslin Diabetes Center in Boston.
Side Effects Led More People to Stop Taking Orforglipron Than Its Rival Pill
With both GLP-1 pills, the most common side effects were gastrointestinal issues such as nausea, diarrhea, vomiting, and indigestion, per Lilly.
However, more patients discontinued treatment with orforglipron than with oral semaglutide in the new study. On the higher doses of these drugs, almost 10 percent of people taking orforglipron stopped treatment, compared with about 5 percent taking semaglutide.
The Experimental Pill Offers Extra Flexibility
One difference between these two GLP-1 pills has to do with timing around meals.
There are no restrictions on eating or drinking when people take orforglipron, per Lilly.
“This makes orforglipron easier to take,” says Melanie Jay, MD, a professor at the New York University Grossman School of Medicine and director of the NYU Langone Comprehensive Program on Obesity Research in New York City.
In particular, patients taking multiple medications may struggle to manage the timing with a semaglutide pill, finding orforglipron more convenient, says Marilyn Tan, MD, a clinical professor at Stanford University School of Medicine and chief of the endocrine clinic at Stanford Health Care in California.
“Adhering to a specific schedule of spacing out various medications can be cumbersome,” Dr. Tan says.
How GLP-1 Drugs Work for Diabetes
In addition, GLP-1 drugs increase the release of the hormone insulin in response to meals, which help lower blood sugar. GLP-1 drugs also reduce levels of the hormone glucagon, which can raise blood sugar.
The new study results “give us further reassurance that both orforglipron and semaglutide are excellent medications to treat type 2 diabetes,” says Beverly Tchang, MD, an associate professor of clinical medicine at the Comprehensive Weight Control Center at Weill Cornell Medicine in New York City.
When Will Orforglipron Be Available?
Lilly said it plans to apply for U.S. Food and Drug Administration (FDA) approval of oforglipron as a diabetes treatment “as soon as possible.” The company is already pursuing approval of orforglipron for obesity, and expects a decision from the FDA this spring.