Even though it’s not yet FDA approved, Retatrutide, often shortened online to “Reta,” has already become one of the hottest topics in weight loss. The investigational medication is being discussed across TikTok, Reddit and bodybuilding forums, where users claim it’s the next evolution of GLP-1 therapy. At the same time, compounded and gray-market versions have begun circulating online, raising concerns among medical experts.
On the latest episode of The Beauty Authority, New York endocrinologist and senior medical advisor for Found, Rekha Kumar, MD, breaks down what Retatrutide actually is, how it differs from Wegovy and Zepbound and why patients should be wary of getting their medical advice from social media. “It’s the next generation of GLP-1s,” she explains, noting that unlike today’s medications, Retatrutide targets three hormone pathways: GLP-1, GIP and glucagon.
Why Everyone Is Talking About Retatrutide
Dr. Kumar calls Retatrutide “the next generation of GLP-1s,” explaining that the investigational medication stands apart because it targets three hormone pathways: GLP-1, GIP and glucagon. While early clinical trial results have generated excitement, she stresses that the drug is still under FDA review. “We don’t expect to see FDA approval for at least another year,” she says. “This has to be submitted to the FDA and reviewed.” Until then, she cautions consumers against assuming products marketed as Retatrutide have been proven safe or effective.
The Biggest Concern Isn’t Retatrutide. It’s the Gray Market.
For Dr. Kumar, the biggest red flag is how many people are obtaining investigational peptides. “The biggest issue when things aren’t FDA approved is we can’t make claims on safety or efficacy,” she says. Without the oversight that comes with FDA approval, products sold through unofficial websites or social media may not meet the same standards for purity, sterility or potency.
“We don’t know about purity, sterility, potency in the batches that people are taking,” she explains. “It could be contaminated, it could have bacteria in it, it could just not be what it says it is.”
Peptides Are an Addition, Not the Foundation
When it comes to peptides in general and how the public is adopting them for longevity, wellness and skin care, Dr. Kumar says she is excited by the future of metabolic medicine and longevity research, she says consumers often misunderstand what peptides can actually accomplish. Peptides aren’t what people think they are,” she says. “They aren’t this big game changer to your health, wellness or beauty. They are literally the icing on the cake.”
Her advice is to focus first on the fundamentals: nutrition, exercise, sleep and treating underlying health conditions. “If you’re putting peptides into a system that is not optimized already, the body’s not going to pick up the signal,” she says.
Watch the full episode above as Dr. Kumar discusses how retatrutide compares to today’s GLP-1 medications, what patients should know before trying investigational peptides and where she sees the future of metabolic medicine heading.
