Eli Lilly has launched an early access program that will allow a limited number of patients with severe obesity to receive its experimental weight loss drug retatrutide before it receives approval. The program is only open to a limited number of eligible patients. According to the company, adults aged 18 years and older may qualify if they have refractory obesity, meaning they have not achieved adequate weight loss despite receiving the highest approved doses of currently available obesity medications. Patients must also have at least two obesity-related health conditions, like type 2 diabetes, cardiovascular disease, or obstructive sleep apnea.They must also be patients who were unable to enroll in an ongoing clinical trial related to retatrutide or a similar investigational medicine. The expanded access, also known as a 'compassionate use' program, is intended for patients with serious medical conditions who have exhausted approved or existing treatment options. "Retatrutide is currently an investigational medicine and has not yet been approved by regulatory authorities," Eli Lilly said, adding that the drug should only be accessed through authorised clinical trials or its expanded access program.Also read: UK Woman Spends £4,000 On Wegovy, Mounjaro, But Loses Less Than 14 Pounds In 15 Months What Is Retatrutide? Retatrutide is one of Eli Lilly's next-generation obesity treatments which is currently under development. Unlike its currently approved GLP-1 drugs, retatrutide activates three hormone receptors: GLP-1, GIP and glucagon. Researchers believe that this triple-action approach could help people lose shed excess weight by reducing appetite as well as increasing their energy expenditure at the same time.Also read: Johnson & Johnson Talc-Cancer Row: Pharma Co To Pay 5.5 Billion To Settle Its Decade-Long Controversial LawsuitsPromising Results The drug has piqued significant interests from patients after its late-stage clinical trials showed some of the highest weight loss outcomes seen with an obesity medication. In the drug's Phase 3 studies, adults without diabetes who received the highest dose lost more than 28% of their body weight over 80 weeks. More recently, Eli Lilly reported that overweight or obese adults living with type 2 diabetes achieved an average weight loss of 20.8%, further proving the drug's efficacy in different patient groups.Also read: Using Compounded GLP-1 Drugs? Here's What Doctors Want You to Know The company plans to submit retatrutide for approval to the US Food and Drug Administration (FDA) in the first quarter of 2027.The early access announcement comes as Eli Lilly continues to build its portfolio of weight loss medications. The company recently released additional Phase 3 data on retatrutide while announcing its plans to obtain regulatory approval in 2027. Beyond retatrutide, Lilly is also advancing orforglipron, an investigational oral GLP-1 pill, alongside expanding access to its approved obesity medicine Zepbound. What Patients Should Know Health experts note that expanded access programs are not the same as regulatory approval. They are meant for select patients who could not participate in the clinical trials and thus have limited treatment options. Patients are also advised not to seek investigational medicines through unofficial online sellers or unregulated sources, as retatrutide has not yet been approved by the FDA. The drug's safety and quality can only be ensured through authorised clinical studies or Eli Lilly's official expanded access program.