retatrutide clinical trials sign up Dosing Schedule: Proven 2026 Guide Retatrutide Helped Adults With Obesity

The FDA has a special program called "expanded access" (sometimes called compassionate use) for people who are seriously ill and have run out of options

Some vendors provide third-party purity testing (certificates of analysis), which can offer some reassurance, but quality varies widely between suppliers

Your doctor (not you directly) can call Lilly at 1-800-545-5979 (1-800-Lilly-Rx)

And the safety profile and discontinuation rates are consistent with other established members of the broadening class of GLP-1 medicines, which is reassuring, says Drucker, who has previously consulted for Eli Lilly but was also not involved in the trial