Fact checked by Nick BlackmerRetatrutide is taken as a once-weekly injection.Credit: martin-dm / Getty ImagesRetatrutide is an investigational weight loss drug that targets three hormones, compared to the one or two targeted by current GLP-1 medications.Recent clinical trials suggest retatrutide may deliver even greater weight loss than drugs like Wegovy and Zepbound.Experts say the medication is very promising, but it’s still being studied and …