Is the oral route possible for peptide and protein drug delivery
Published by Eli Lilly in December 2025, the results showed: Average weight loss of 28.7% at the 12mg dose over 68 weeks comparable to TRIUMPH-1 at the same dose Significant reductions in WOMAC pain scores a validated measure of knee pain and function More than 1 in 8 patients on retatrutide were completely free of knee pain by the end of the trial compared with less than 1 in 25 on placebo Significant improvements in physical function, stair climbing, and walking distance This matters clinically because knee osteoarthritis and obesity are deeply intertwined each kilogram of body weight lost reduces knee joint load by approximately 4 kilograms during walking
Add two to three sessions of resistance training per week, focusing on progressive overload and compound movements to preserve and build lean mass while you lose fat
Understanding this mechanism helps patients distinguish between benign, self-limiting vision changes and serious complications requiring immediate medical attention
Patients in the obesity indication, on the higher doses, lose around 21%
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